| Series
| Role
| Episode
| Airdate
|
| McMillan & Wife | Policeman | 6x05 - Affair of the Heart | March 20, 1977
|
| Emergency! | | 7x01 - The Steel Inferno | January 7, 1978
|
| Barnaby Jones | Mitchell Grady II | 6x21 - Terror on a Quiet Afternoon | February 9, 1978
|
| Nero Wolfe (1981) | | 1x05 - Might As Well Be Dead | February 13, 1981
|
| MacGyver | Brian Ashford | 1x20 - The Escape | April 16, 1986
|
| Murder, She Wrote | Binky Holborn | 2x22 - If the Frame Fits | May 18, 1986
|
| Star Trek: The Next Generation | Q | 1x01 - Encounter at Farpoint (1) | September 28, 1987
|
| Star Trek: The Next Generation | Q | 1x02 - Encounter at Farpoint (2) | September 28, 1987
|
| Star Trek: The Next Generation | Q | 1x10 - Hide and Q | November 23, 1987
|
| Star Trek: The Next Generation | Q | 2x16 - Q Who? | May 8, 1989
|
| Star Trek: The Next Generation | Q | 3x13 - Deja Q | February 5, 1990
|
| L.A. Law | Mark Chelios | 5x15 - The Beverly Hills Hangers | March 14, 1991
|
| Star Trek: The Next Generation | Q | 4x20 - Qpid | April 22, 1991
|
| Civil Wars | Terry Harper | 1x9 - Pro Se Can You See | January 22, 1992
|
| Star Trek: The Next Generation | Q | 6x06 - True Q | October 26, 1992
|
| Batman: The Animated Series | Eagleton | 1x48 - The Mechanic | January 24, 1993
|
| Star Trek: Deep Space Nine | Q | 1x07 - Q-Less | February 7, 1993
|
| Star Trek: The Next Generation | Q | 6x15 - Tapestry | February 15, 1993
|
| Batman: The Animated Series | Eagleton | 1x54 - Blind as a Bat | February 22, 1993
|
| Matlock | Dr.Levinson | 8x08 - The Haunted (1) | November 18, 1993
|
| Star Trek: The Next Generation | Q | 7x25 - All Good Things... (1) | May 23, 1994
|
| Star Trek: Voyager | Q | 2x18 - Deathwish | February 19, 1996
|
| Picket Fences | District Attorney | 4x18 - Three Weddings and a Meltdown | April 24, 1996
|
| Star Trek: Voyager | Q | 3x11 - The Q and the Grey | November 27, 1996
|
| Duckman | Tyler Fitzgerald | 4x05 - From Brad to Worse | February 1, 1997
|
| Touched by an Angel | Justinian Jones | 4x05 - Jones vs. God | October 19, 1997
|
| The Practice | | 2x12 - Race with the Devil | December 13, 1997
|
| Ally McBeal | Jackson Poile | 2x10 - Making Spirits Bright | December 14, 1998
|
| The Outer Limits (1995) | Donald Finley | 6x02 - The Gun | January 28, 2000
|
| The West Wing | Al Kiefer | 1x16 - 20 Hours in L.A. | February 23, 2000
|
| The West Wing | Al Kiefer | 1x20 - Mandatory Minimums | May 3, 2000
|
| The Practice | Walter Bannish | 5x12 - Payback | January 14, 2001
|
| Star Trek: Voyager | Q | 7x19 - Q2 | April 11, 2001
|
| Stargate SG-1 | Col. Frank Simmons | 5x03 - Ascension | July 13, 2001
|
| Stargate SG-1 | Col. Frank Simmons | 5x04 - The Fifth Man | July 20, 2001
|
| Stargate SG-1 | Colonel John Symmonds | 5x11 - Desperate Measures | September 7, 2001
|
| The Guardian | Frank Newburg | 1x13 - Privilege | January 22, 2002
|
| Stargate SG-1 | Col. Frank Simmons | 5x14 - 48 Hours | March 15, 2002
|
| Stargate SG-1 | Colonel Frank Simmons | 6x11 - Prometheus (1) | August 23, 2002
|
| Judging Amy | Dr. Egan | 4x21 - Picture of Perfect | April 22, 2003
|
| NYPD Blue | Scott Garvin | 12x04 - Divorce Detective Style | October 19, 2004
|
| Charmed | Odin | 7x16 - The Seven Year Witch | April 10, 2005
|
| The Closer (2005) | Dr. Dawson | 1x05 - Flashpoint | July 11, 2005
|
| Shark | Warren Kovak | 2x03 - Eye of the Beholder | October 7, 2007
|
