Harrison Ford: What Lies Beneath
Carrie Fisher: Jay and Silent Bob Strike Back (Just in a cameo)
Chris Lee: Magneto (X-Men movies)
Sam Jackson: We got snakes on this plane!!!
Natalie Portman: V for Vendetta
The island is the movie Chris was thinking of. (With Ewan Mcgregor)
Edit: Just thought of another. Ewan Mcgregor was in Skycaptain and The World of Tomorrow (which by the way was a GREAT movie.)