Originally posted by The Comedy Bee:
The voice actors show up all over the place. Phil Lamarr was in Pulp Fiction, Lauren Tom was in Friends, Billy West was in every other cartoon ever made...
Also David Coen wrote for Beavis and Butthead.
To add to that:
Phil Lamarr is the voice of Samurai Jack.
Billy West was the voice of Zim in the Unaired Invader Zim Pilot and also... every cartoon ever.
Katey Segal is on 8 Simple Rules.
John DiMaggio is a guest voice on Samurai Jack, he plays the Scotsman in 2 episodes and a 1-hour special. I think.