Crispin Glover
I love this guy.  He's so unusual looking.  I love the whole "creepy thin man" thing that he has going on in all his appearances.  The only movie I saw him in was Charlie's Angels and he didn't have any lines but his presence and performance was memorable.

Movies:
Charlie's Angels 1 & 2
Willard
Nurse Betty
Dead Man
What's Eating Gilbert Grape
The Doors
Back to the Future Part 2
Back
Music: Metallica ~ Unforgiven
Willard
Willard
Charlie's Angels
Charlie's Angels