This could be an amazing resource, beside the Star Wars films they have 16mm copies of (including what others have mentioned):
Indy films
Close Encounters
Ghostbusters
2001
Star Trek 2
ET
Independence Day (eh)
War games
Edward Scissorhands
Shrek
Fantastic Voyage
Explorers
Short Circuit
Forbidden planet
Planet of the apes
Princess Bride
Dracula
North By Northwest
The Birds
39 Steps
And that's just from a few minutes of searching