Trey Parker (South Park: Bigger, Longer & Uncut, 1999) Eric Idle (Monty Python And The Holy Grail, 1975) John Cleese (A Fish Called Wanda, 1988) Jamie Lee Curtis (True Lies, 1994) Bill Paxton (Weird Science, 1985) Robert Downey Jr. (Bowfinger, 1999) Terence Stamp - Chancellor Valorum
I couldn't find anything quicker than Two Degrees:
Trey Parker (BASEketball, 1998) Robert Vaughan (The Mind Of Mr Soames, 1970) Terence Stamp - Chancellor Velorum... er... again!!
Happy Birthday, Joan Fontaine!