| Aasta |
Tiitel |
Roll |
Notes |
| 1977 |
Kojak |
Thomas Rindone |
2 osa "Kojak's Days Pt1 & Pt2" |
| 1979 |
Taxi |
Philip Polevoy |
Osa: "Nardo Loses Her Marbles" |
| 1982 |
Silver Spoons |
Louis Morgan |
Pilootosa |
| 1982–1984 |
Alice |
Officer Maxwell |
8 osa |
| 1986 |
Benson |
Richard Alan Tracy |
Osa: "Reel Murder: Part 1" |
| 1986 |
Hardcastle and McCormick |
Manny |
Osa: "Brother, Can You Spare a Crime?" |
| 1986 |
Scarecrow and Mrs. King |
Randall Skylar |
Osa: "Three Little Spies" |
| 1986 |
Amazing Stories |
Tony Sepulveda |
Osa: "Boo!" |
| 1986 |
The Golden Girls |
Dr. Revell |
Osa: "The Operation" |
| 1987–1991 |
L.A. Law |
Lawyer John Dunphy, Lawyer Joe Dumphy |
2 osa |
| 1987 |
21 Jump Street |
Ralph Buckley |
Osa: "Gotta Finish the Riff" |
| 1987 |
St. Elsewhere |
Eli Muzzy |
Osa: "Weigh In, Weight Out" |
| 1988–1991 |
The Wonder Years |
Coach Cutlip |
15 Osai. Nomineeritud Primetime Emmy Awardile kui väljapaistev külalisnäitlseja komöödiasarjas ning publiku lemmiku auhinnale Viewers for Quality Television Awardil kui parim erikülaline. |
| 1988–1991 |
China Beach |
Dr. Dick Richard |
54 Osai Nomineeritud publiku lemmikuks Viewers for Quality Television Awardil kui parim kõrvalosatäitja kvaliteetdraamasarjas. (1990–91) |
| 1989 |
Newhart |
Terry |
Osa: "The Little Match Girl" |
| 1992 |
CBS Schoolbreak Special |
Paul Lance |
Osa: "Two Teens and a Baby" |
| 1992–1993 |
Dinosaurs |
Clerk / Muse / Ted (voice) |
3 osa |
| 1993 |
Home Improvement |
Joe Morton |
2 osa |
| 1993 |
The Adventures of Brisco County, Jr. |
Puel |
Osa: "The Orb Scholar" |
| 1993 |
Batman: The Animated Series |
Eddie G. (voice) |
Osa: "The Man Who Killed Batman" |
| 1993 |
Tales from the Crypt |
Frank Bobo |
Osa: "Til Death Do We Part" |
| 1994 |
Rebel Highway |
Mr. Ed Cahn |
Osa: "Runaway Daughters" |
| 1995–2001 |
Star Trek: Voyager |
The Doctor, Dr. Lewis Zimmerman |
166 Osai Nomineeritud Saturn Awardile kui parim kõrvalosatäitja televisioonis |
| 1995 |
ER |
Abraham Zimble, Mobile Notary |
Osa: "Days Like This" |
| 1995–1997 |
The Cartoon Cartoon Show |
Pfish (voice) |
2 osa |
| 1997 |
Early Edition |
Doctor |
Osa: "Faith" |
| 1997 |
Star Trek: Deep Space Nine |
Dr. Lewis Zimmerman, Emergency Medical Hologram |
Osa: "Doctor Bashir, I Presume?" |
| 1998 |
The Outer Limits |
Emmet Harley |
Osa: "Sarcophagus" |
| 1998 |
Cow and Chicken |
President / Puppet President / Narrator (voice) |
Osa: "101 Uses for Cow and Chicken/Intelligent Life?/I.M. Weasel: Tree Story" |
| 1999 |
Ally McBeal |
Barry Philbrick |
Osa: "Love's Illusions" |
| 2000 |
Buzz Lightyear of Star Command |
Professor Reddschift (voice) |
Osa: "First Missions" |
| 2001 |
7 Days |
Major Michael McGrath |
Osa: "Revelation" |
| 2001 |
Frasier |
Mr. Koechner |
Osa: "Bully for Martin" |
| 2001 |
The Weakest Link |
Himself |
Osa: "Star Trek: Weakest Link Edition |
| 2002 |
Crossing Jordan |
Father Bruno Casnelli |
Osa: "Miracles & Wonders" |
| 2002 |
The Practice |
Dr. Edmunds |
Osa: "Neighboring Species" |
| 2002–2003 |
Justice League |
Amazo / Blackhawk (voice) |
4 osa |
| 2003–2004 |
The Lyon's Den |
Detective Nick Traub |
7 osa |
| 2003 |
Sabrina, The Teenage Witch |
Bob Jacobs |
3 osa |
| 2004–2007 |
Stargate SG-1 |
Richard Woolsey |
7 osa |
| 2004 |
The West Wing |
E. Bradford Shelton |
Osa: "The Supremes" |
| 2004 |
Justice League Unlimited |
Amazo (voice) |
2 osa |
| 2005–2006 |
E-Ring |
Larry Kincaid |
4 osa |
| 2005 |
The 4400 |
Trent Appelbaum |
Osa: "Weight of the World" |
| 2006 |
Ben 10 |
Leader Alien (voice) |
Osa: "The Big Tick" |
| 2006 |
Eve |
Professor Dawson |
Hooaeg 3 osa 17 |
| 2006 |
The O.C. |
Bill Merriam |
Osa: "The Pot Stirrer" |
| 2006–2009 |
Stargate Atlantis |
Richard Woolsey |
20 osa |
| 2007 |
The Closer |
Mr. Sheffield |
Osa: "Saving Face" |
| 2007 |
CSI: NY |
Sheriff Benson |
Osa: "Boo" |
| 2008 |
Smallville |
Edward Teague |
2 osa |
| 2009–2010 |
Castle |
Dr. Clark Murray |
2 osa |
| 2009 |
Chuck |
Dr. Howard Busgang (Perseus) |
Osa: "Chuck Versus the Lethal Weapon" |
| 2010 |
Justified |
Karl Hanselman |
Osa: "The Collection" |
| 2010 |
Supernatural |
Wayne Whittaker/Leprachaun |
Osa: "Clap Your Hands If You Believe" |
| 2011 |
Stargate Universe |
Richard Woolsey |
Osa: "Seizure" |
| 2011 |
No Ordinary Family |
Vice-principal Nance |
Osa: "No Ordinary Animal" |
| 2011 |
United States of Tara |
Dr. Smolow |
Osa: "Bryce Will Play" |
| 2012 |
Body of Proof |
Henry |
Osa: "Cold Blooded" |
| 2012 |
Austin and Ally |
Dr. Grant |
Osa: "Successes & Setbacks" |
| 2012 |
Hawaii Five-0 |
FBI Agent |
Osa: "The Promise" |
| 2012–2013 |
The Mentalist |
Jason Cooper |
4 osa |
| 2013 |
Jessie |
Cyril Lipton |
Osa: "To Be Me or Not to Be Me" |
| 2014 |
Bones |
Dr. Lawrence Rozran |
Osa: "The Heiress in the Hill" |
| 2014–2018 |
Bravest Warriors |
Puddingtown / Eyeball (voice) |
7 osa |
| 2015 |
Star Trek: Renegades |
Dr. Lewis Zimmerman |
Osa: "Pilot" |
| 2016 |
Lucifer |
Yuri |
Osa: "Lady Parts" |
| 2017 |
Salem |
Mr. Stoughton |
Osa: "Night's black agents" |
| 2017 |
Justice League Action |
Two-Face (voice) |
Osa: "Double Cross" |
| 2017–2019 |
The Orville |
Ildis Kitan |
2 osa |
| 2019 |
Dickinson |
Ithamar Conkey |
4 osa |
| 2019 |
Schooled |
Himself |
Osa: “Money for RENT” |