Jeezus....where to being? Honestly, to many to mention. Besides, there are several genre's so narrowing it down to 3 is not likely. CASINOGoodfellasGodfather 1 & 2Boogie NightsShawshank Redemption300RockyMy Cousin VinnyMiseryThe ProgramBugsyBLOWBeing John MalkovichForrest GumpNo Country For Old MenGangs of New YorkDead PresidentsAmerican History XClose Encounters of the third kindDances With WolvesMatrixAmerican Psycho The PrestigeBoyz N da HoodColorsAmerican MeBlood In Blood OutFuck, I could be here all night...
LOTS of my own favorites there. Gotta mention CON AIR too
2. Blazing Saddles.
The mighty Paul Anderson's appearance in that film makes it worthwhile
1. "Rambo"2. "DaddyWaddy vs. The Paint Undercoat From Hell"3. "Lord Of War"... also Alien, TheThing, etc.