I was reading through Bruce's IMDB page and figured I'd make a list of his TV show cameos (excluding ones he was in as a main character or was in a lot eg. Ellen) Some of these may be gems worth tracking down for the set.

"Megas XLR"
- The Return (2004) TV Episode (voice) .... Magnanimous
- Battle Royale (2004) TV Episode (voice) .... Magnaminous

"My Life as a Teenage Robot"
- Daydream Believer/This Time with Feeling (2003) TV Episode (voice) .... Himcules

"Duck Dodgers"
... aka Duck Dodgers in the 24½th Century (USA: long title)
- K-9 Kaddy/Pig of Action (2003) TV Episode (voice) .... Pork Piggler

"Charmed"
- Witch Way Now? (2002) TV Episode .... FBI Agent Jackman

"The Legend of Tarzan"
... aka Disney's the Legend of Tarzan (USA: complete title)
- Tarzan and One Punch Mullargan (2001) TV Episode (voice) .... Max Liebling

"Beggars and Choosers"
- The Long Goodbye (2001) TV Episode .... Jack

"The X Files"
... aka The X-Files (USA)
- Terms of Endearment (1999) TV Episode .... Wayne Weinsider

"Timecop"
- The Future, Jack, the Future (1998) TV Episode .... Agent Tommy Maddox

"Weird Science"
- I Dream of Gene (1997) TV Episode .... Gene the Genie

"Homicide: Life on the Street"
... aka Homicide (USA: informal short title)
- Justice: Part 2 (1996) TV Episode .... Jake Rodzinsky
- Justice: Part 1 (1996) TV Episode .... Jake Rodzinsky

"American Gothic"
- Meet the Beetles (1995) TV Episode .... Lt. Drey

"Lois & Clark: The New Adventures of Superman"
... aka Lois & Clark
... aka The New Adventures of Superman (UK)
- We Have a Lot to Talk About (1995) TV Episode .... Bill Church Jr.
- Whine, Whine, Whine (1995) TV Episode .... Bill Church Jr.
- Individual Responsibility (1995) TV Episode .... Bill Church Jr.

There also seem to be a good few films where he had a very short uncreditted cameo, likely only a few seconds of screen time - another possible adition?