My only memory of him besides Gilligian was his appearance on South Park on Jesus' talk show.

Jesus: Beginning today, we're taking the show in a new direction. We've got some very interesting people coming on the show this week for you, our viewers. Today's guest is TV's Gilligan. Mr. Bob Denver.
Announcer: And here's uh Booooobbb Denver.
Jesus: Hi, Bob Denver.
Bob: Hi, Jesus. Great to be here ahem.
*long pause*
Jesus: So. Bob. So, you just get in town?
Bob: Yep. Just got in.
*another pause*
Jesus: So. Um. So, what have you been up to?
Bob: Um...nothing. Nothing really at all.
Jesus: [cynically] Oh boy.

R.I.P. Bob