I know he's not a Bobcat, but didn't Bobby Brannen for UC back in the 90's go all four years w/out a dunk? For some reason I recall hearing that and being amazed at that stat.
For the record, I've been playing pickup basketball for years and I've never once dunked.

Also, Alan Swank used to play with us, and I never saw him dunk, either.
Now, Jeff McKinney, he might have dunked the ball! 
Now, the burning question of the day is, which of you BAers HAVE dunked. The assembled masses want to know the answer to this burning question. Who will be the first to admit this feat of athletic prowess?