This actually happened to me for the first time last week. I was playing Sonic the Hedgehog 2, and after I beat it the credits starting rolling. For some reason I actually decided to read them this time and lo and behold I saw Steve Woita and Tim Skelly's names in there (I had forgotten they helped out on the game). It was actually pretty neat to finish a game and say "Hey I know that guy!". I had actually seen Steve Woita's name in the Kid Chameleon credits years ago, but I didn't know him at that point.
Incidentally I also noticed Clint Dyer's name in the back of the Knuckles Chaotix manual under "Special Thanks". I wonder what he did on the game?
Tempest