omg this question stresses me out I could never list all of them! Off the top of my head...
Serious films:
La Haine and A Prophet (both french subtitled but so worth it, they are both amazing)
Moon
Boogie Nights
Leon
Blue Velvet
Kill Bill 1 and 2 (but I am sure everyone has seen these!)
Best in Show
Dazed and Confused
Hairspray (THE JOHN WATERS VERSION NOTTTTTT THE MUSICAL EURGH)
This is Spinal Tap
Zombieland
Four Lions
The Warriors
The Room (the best unintentionally funny film I have ever seen)
28 Days Later
Grave Encounters
The Omen (the 70s one)
Ohhh I am missing so many great films out as well!
Rubber dingy rapids bruv!!!! One of my faves.... !!