Here's my effort:
SPOLIER ALERT!
Airplane (twisted plane)
Rain Man (bloke under rain cloud)
Top Gun (jet)
Empire Strikes Back (obvious)
Ghostbusters (trap)
Back to the Future (flames?)
Friday the 13th (calendar)
Blade Runner
ET
The Neverending Story (small child on the 'Luck Dragon' cloud. You have to have seen the film)
Scarface
Breakfast Club
Princess Bride (curly hair bloke with sword)
Caddyshack ( gopher in hole with golf ball)
Raging Bull
Predator (in the tree)
The Fly
Is that Matthew Broderick holding a ghetto blaster over his head?. Could be Ferris Buellers Day Off?. Or Tom Hanks in Big?.