A couple more to add to the mix
Top Secret (a brilliant and very much underrated comedy imo)
Spaceballs
United 93 (follows 9/11 response by the authorities and those aboard the doomed flight 93)
Without repeating the same old same old as mentioned by several posters already i thought i'd throw in a few less well known and / or previously mentioned films that i really enjoyed.
Tucker and Dale vs evil
Now you see me
Gone girl
Zombieland
Kick Ass
Rush
A long walk to freedom
12 years a slave