| 9-1-1 | 2018 | Melvin | TV Show |
| Chilling Adventures of Sabrina | 2018 | Daniel Webster | TV Show |
| Dirty John | 2018 | Old William | TV Show |
| Feud | 2017 | George Cukor | TV Show |
| When We Rise | 2017 | Dr. Charles W. Socarides | TV Show |
| Dear White People | 2017 | President Fletcher | TV Show |
| The Orville | 2017 | Prefect | TV Show |
| Claws | 2017 | Baron Axel von Reichler | TV Show |
| Faiâ enburemu hîrôzu | 2017 | Jagen / Jaffar / Subaki (English version, voice, as Walden James) | Unknown |
| Young Sheldon | 2017 | Rabbi Schneiderman | TV Show |
| DC's Legends of Tomorrow | 2016 | Albert Einstein | TV Show |
| This Is Us | 2016 | Ron Schiller | TV Show |
| American Housewife | 2016 | Dr. Paulson | TV Show |
| Richual | 2016 | Narrator / Daniel Levine | Short Film |
| The Atticus Institute | 2015 | Marcus Wheeler | Movie |
| Daddy | 2015 | Uncle Liam | Movie |
| Resident Evil: Revelations 2 | 2015 | Evgeny Rebic (English version, voice, as Walter Rego) | Unknown |
| Fire Emblem: Fates | 2015 | Subaki / Iago / Nichol / ... (English version, voice, uncredited) | Unknown |
| Resident Evil: Revelations 2 - The Struggle | 2015 | Evgeny Rebic (English version, voice, as Walter Rego) | Unknown |
| Complete Works | 2014 | Richard Dallion / Richard Dallion (pictured) | TV Show |
| A Mother's Rage | 2013 | Dr. White | TV Movie |
| The Fosters | 2013 | Henry Marshall | TV Show |
| Instant Mom | 2013 | Principal Skinner | TV Show |
| Project: SERA | 2013 | Senator Simpson | TV Show |
| Mom | 2013 | Professor Addison | TV Show |
| Reiton-kyoju to Cho-Bunmei E no Isan | 2013 | Desmond Sycamore / Jean Descole (English version, voice, as Walter Rego) | Unknown |
| In Sickness and in Health | 2013 | Steve | Short Film |
| Psychopath for a Day | 2013 | Father (voice) | Short Film |
| Perception | 2012 | FBI Agent Jack Crawford / Jack Crawford | TV Show |
| Work It | 2012 | Dr. Prescott | TV Show |
| Electric City | 2012 | Dick Jacobs | TV Show |
| Atlas Shrugged II: The Strike | 2012 | Dr. Floyd Ferris | Movie |
| Hello I Must Be Going | 2012 | Stan | Movie |
| I Will Follow You Into the Dark | 2012 | Dr. Thomas | Movie |
| Harry's Law | 2011 | Judge Randy | TV Show |
| Revenge | 2011 | Judge Rivers | TV Show |
| Jessie | 2011 | Ivan | TV Show |
| Reiton-kyôju to kiseki no kamen | 2011 | Jean Descole (English version, voice, as Walter Rego) | Unknown |
| Healing Hands | 2010 | Dr. Harris | TV Movie |
| Parenthood | 2010 | Principal Liam Taylor | TV Show |
| No Ordinary Family | 2010 | Dr. Klein | TV Show |
| Hawthorne | 2009 | Dr. Henry Lee | TV Show |
| Split Second | 2009 | Dr. Radley | Movie |
| Ronna & Beverly | 2009 | Dr. Len Block | TV Movie |
| Professor Layton and the Last Specter | 2009 | Jean Descole (English version, voice, as Walter Rego) | Unknown |
| Rome & Jewel | 2008 | Mayor Capps | Movie |
| The Candlelight Murders | 2008 | Dr. Rod Huffman | Movie |
| Sweet Nothing in My Ear | 2008 | Dr. Flynt (uncredited) | TV Movie |
| Eli Stone | 2008 | Damon Smalls | TV Show |
| True Jackson, VP | 2008 | | TV Show |
| The Mentalist | 2008 | Judge Manchester | TV Show |
| The Delivery | 2008 | Lance / The Mad Hatter | Short Film |
| Choose Connor | 2007 | Cary Evor | Movie |
| Jekyll | 2007 | Daniel Carew | Movie |
| Dirty Sexy Money | 2007 | Dr. Zwerling | TV Show |
| Greek | 2007 | Dr. Larsen | TV Show |
| Wizards of Waverly Place | 2007 | Gorog | TV Show |
| Brothers & Sisters | 2006 | Dr. Marc Wilson | TV Show |
| Day Break | 2006 | Barry Colburn | TV Show |
| Shark | 2006 | Lance Horning | TV Show |
| Metal Gear Solid: Portable Ops | 2006 | Commander (English version, voice, as John Rubenstein) | Unknown |
| Amber Frey: Witness for the Prosecution | 2005 | Mark Geragos | TV Movie |
| Jane Doe: The Wrong Face | 2005 | Phil Raphaelson | TV Movie |
| Mrs. Harris | 2005 | Tarnower's Best Friend | TV Movie |
| Barbershop | 2005 | Nicholas Kane | TV Show |
| Bones | 2005 | Mick Warren | TV Show |
| Criminal Minds | 2005 | Hayden Rawlings | TV Show |
| Grey's Anatomy | 2005 | Keith Kalber | TV Show |
| Numb3rs | 2005 | Gene Evans | TV Show |
| Related | 2005 | Dr. Shapiro | TV Show |
| Supernatural | 2005 | Charlie | TV Show |
| The Closer | 2005 | Dr. Brown | TV Show |
| Grandia III | 2005 | | Unknown |
| Nano Breaker | 2005 | General Raymond (English version, voice, uncredited) | Unknown |
| Desperate Housewives | 2004 | Principal Hobson | TV Show |
| House M.D. | 2004 | Dr. Ayersman | TV Show |
| 21 Grams | 2003 | Gynecologist | Movie |
| Cold Case | 2003 | Rafe Gray | TV Show |
| NCIS | 2003 | Director Bob | TV Show |
| The Lyon's Den | 2003 | Mr. Woodard | TV Show |
| Red Dragon | 2002 | Dinner Guest | Movie |
| First Monday | 2002 | | TV Show |
| Ghost in the Shell: Stand Alone Complex | 2002 | Ernest Serano | TV Show |
| Presidio Med | 2002 | | TV Show |
| She Spies | 2002 | Senator Thomas Jefferson Mitchell | TV Show |
| Without a Trace | 2002 | Dr. Feldman | TV Show |
| Xenosaga Episode I: Der Wille zur Macht | 2002 | Suou Uzuki (English version, voice, uncredited) | Unknown |
| 24 | 2001 | Secretary of State Alex | TV Show |
| Star Trek: Enterprise | 2001 | Minister Kuvak / Mazarite Captain | TV Show |
| The Agency | 2001 | | TV Show |
| The Division | 2001 | Doctor Bertman | TV Show |
| The Guardian | 2001 | Sen. Nathan Caldwell | TV Show |
| Perfect Murder, Perfect Town: JonBenét and the City of Boulder | 2000 | Rev. Hoverstock | TV Show |
| Boston Public | 2000 | Judge Joseph Papp | TV Show |
| CSI: Crime Scene Investigation | 2000 | Priest / Judge Crawford | TV Show |
| Gideon's Crossing | 2000 | Larry Palmer | TV Show |
| Girlfriends | 2000 | Dr. Wulfberg | TV Show |
| Strong Medicine | 2000 | Lyle LaCouer | TV Show |
| The District | 2000 | George Wilson | TV Show |
| Angel | 1999 | Linwood Murrow | TV Show |
| Family Law | 1999 | Garwicz | TV Show |
| Judging Amy | 1999 | James Pierpoint | TV Show |
| Law & Order: Special Victims Unit | 1999 | Judge Schuyler | TV Show |
| The Big O | 1999 | Vice President | TV Show |
| The Parkers | 1999 | Jonathan | TV Show |
| The West Wing | 1999 | Senator Andy Ritter | TV Show |
| Any Day Now | 1998 | Shaughnessy | TV Show |
| Becker | 1998 | Dickie | TV Show |
| Charmed | 1998 | Dr. Berenson | TV Show |
| The Sleepwalker Killing | 1997 | Dr. Frank Corrigan | TV Movie |
| The Practice | 1997 | Judge Joseph Papp | TV Show |
| Norma Jean & Marilyn | 1996 | Darryl Zanuck | TV Movie |
| Adventures from the Book of Virtues | 1996 | | TV Show |
| Early Edition | 1996 | Dr. Marcus | TV Show |
| Superman: The Animated Series | 1996 | Peterson | TV Show |
| Bureau of Alien Detectors | 1996 | | TV Show |
| Mercy | 1995 | Frank Kramer | Movie |
| 919 Fifth Avenue | 1995 | Jerome Wildsmith | TV Movie |
| Star Trek: Voyager | 1995 | John Evansville | TV Show |
| A Perry Mason Mystery: The Case of the Lethal Lifestyle | 1994 | District Attorney | TV Movie |
| ER | 1994 | Dr. Kenner | TV Show |
| Friends | 1994 | The Doctor | TV Show |
| Party of Five | 1994 | Walter Alcott | TV Show |
| RoboCop | 1994 | Chip Chayken | TV Show |
| Another Stakeout | 1993 | Thomas Hassrick | Movie |
| The American Clock | 1993 | Moe Baumler | TV Movie |
| Against the Grain | 1993 | Mr. O'Brien | TV Show |
| Diagnosis Murder | 1993 | Peter Trent / Thomas Taylor | TV Show |
| Frasier | 1993 | Phillip Hayson | TV Show |
| Lois & Clark: The New Adventures of Superman | 1993 | Emmet Vale | TV Show |
| NYPD Blue | 1993 | Matthew Bernstein | TV Show |
| In My Daughter's Name | 1992 | Ban Worrall | TV Movie |
| The Legend of Prince Valiant | 1991 | | TV Show |
| Voices Within: The Lives of Truddi Chase | 1990 | Norman De Roin | TV Movie |
| Law & Order | 1990 | Mr. Thurber | TV Show |
| Father Dowling Mysteries | 1989 | Tim | TV Show |
| Beryl Markham: A Shadow on the Sun | 1988 | Arthur Kane | TV Movie |
| Liberace | 1988 | Jamie | TV Movie |
| Sam Found Out: A Triple Play | 1988 | Johnny | TV Movie |
| Someone to Watch Over Me | 1987 | Neil Steinhart | Movie |
| Still Crazy Like a Fox | 1987 | Harrison Fox, Jr. | TV Movie |
| The Two Mrs. Grenvilles | 1987 | Bratsie Bleeker | TV Show |
| Jake and the Fatman | 1987 | Brent Moore | TV Show |
| Matlock | 1986 | Dr. Douglas Clark / Carl Benedict | TV Show |
| American Masters | 1985 | Host | TV Show |
| Crazy Like a Fox | 1984 | Harrison Fox | TV Show |
| Highway to Heaven | 1984 | Matthew | TV Show |
| Murder, She Wrote | 1984 | George Foster | TV Show |
| Daniel | 1983 | Robert Lewin | Movie |
| I Take These Men | 1983 | David Koenig | TV Movie |
| Emerald Point N.A.S. | 1983 | Lt. Cmdr. Edwards | TV Show |
| Hotel | 1983 | Cliff Phillips | TV Show |
| Freedom to Speak | 1983 | | TV Show |
| The Candy Lightner Story | 1983 | Steve White | TV Movie |
| Killjoy | 1981 | Dr. Paul Trenton | TV Movie |
| Skokie | 1981 | Herb Lewisohn | TV Movie |
| The Silent Lovers | 1980 | Irving Thalberg | TV Movie |
| Make Me an Offer | 1980 | Dr. Max Westcott | TV Movie |
| Roots: The Next Generations | 1979 | Lieutenant Hamilton Ten Eyck | TV Show |
| The French Atlantic Affair | 1979 | Herb Kleinfeld | TV Show |
| Trapper John, M.D. | 1979 | Hank Palmer | TV Show |
| She's Dressed to Kill | 1979 | Alan Lenz | TV Movie |
| In Search of Historic Jesus | 1979 | Jesus | Movie |
| The Boys from Brazil | 1978 | David Bennett | Movie |
| The Paper Chase | 1978 | Professor Wendell Peterson | TV Show |
| Vega$ | 1978 | Vance Philroy | TV Show |
| Happily Ever After | 1978 | Richy | TV Movie |
| The Gift of the Magi | 1978 | Jim | TV Movie |
| The Car | 1977 | John Morris | Movie |
| Fantasy Island | 1977 | Donald King / Johnny Court | TV Show |
| Lou Grant | 1977 | Andrew Martin | TV Show |
| The Love Boat | 1977 | Jack Forbes / Allan Davis / George Allison | TV Show |
| What Really Happened to the Class of '65? | 1977 | Jaik | TV Show |
| Boogievision | 1977 | Young Doctor | Movie |
| Corey: For the People | 1977 | Dan Corey | TV Movie |
| The Quest: The Longest Drive | 1976 | Wakely | TV Movie |
| Family | 1976 | Jeff Maitland | TV Show |
| Live from Lincoln Center | 1976 | Host | TV Show |
| Quincy M.E. | 1976 | Dr. Walter Ross | TV Show |
| The Quest | 1976 | Wakely | TV Show |
| Barbary Coast | 1975 | Garrison | TV Show |
| Wonder Woman | 1975 | Major Dexter | TV Show |
| All Together Now | 1975 | Bill Lindsay | TV Movie |
| Mr. & Ms. and the Magic Studio Mystery | 1975 | David | TV Movie |
| Movin' On | 1974 | Gershon Simenov | TV Show |
| Police Woman | 1974 | Tommy Donlevy | TV Show |
| Barnaby Jones | 1973 | Larry Christopher / Chris Garrison | TV Show |
| Harry O | 1973 | Richard Trask / Jack Dawes | TV Show |
| The Young and the Restless | 1973 | Dr. Charles Taylor | TV Show |
| The Wide World of Mystery | 1973 | David | TV Show |
| Something Evil | 1972 | Ernest Lincoln | TV Movie |
| The Rookies | 1972 | Richard Komansky | TV Show |
| The Streets of San Francisco | 1972 | Walter J. Young / Lindy | TV Show |
| The Sandpit Generals | 1971 | Professor | Movie |
| Zachariah | 1971 | Zachariah | Movie |
| Cannon | 1971 | Larry Bolinger | TV Show |
| Nichols | 1971 | Fred Buckerman | TV Show |
| A Howling in the Woods | 1971 | Justin Conway | TV Movie |
| Getting Straight | 1970 | Herbert | Movie |
| The Mary Tyler Moore Show | 1970 | Matt Bryan Jr. | TV Show |
| Matt Lincoln | 1970 | Christopher | TV Show |
| Men at Law | 1970 | Ron Martin | TV Show |
| The Psychiatrist | 1970 | Randell File / Teddy, the Student Addict | TV Show |
| The Trouble with Girls | 1969 | Princeton | Movie |
| Room 222 | 1969 | Martin Kaufman | TV Show |
| The Young Lawyers | 1969 | Dan Fulton | TV Show |
| The Bold Ones: The Protectors | 1969 | Pvt. Chuck Kelley | TV Show |
| Journey to Shiloh | 1968 | | Movie |
| Hawaii Five-O | 1968 | Joey Kalima / Harold | TV Show |
| Mod Squad | 1968 | Larry Wheeler | TV Show |
| Dragnet 1967 | 1967 | Paul Whidden | TV Show |
| Ironside | 1967 | 2nd Hippie | TV Show |
| CBS Playhouse | 1967 | | TV Show |
| The Virginian | 1962 | Billy Simmons | TV Show |
| Our Almost Completely True Story | | Dr. Morrow | Movie |
