off the top of my head

Battle of Algiers
Gladiator
Casablanca
Delicatessen
Duck soup
Crouching Tiger
Betty Blue
Duck you sucker
Braveheart
Airplane
Last of the Mohicans
Millers crossing

They are all films that i just watch and watch whenever they are on TV

LA Confidential
The Usual Suspects
The Insider
Cidade De Deus
No Country For Old Men
12 Angry Men
Requiem For A Dream
Anchorman
Taxi Driver
The Godfather Part II

First ten without giving it any serious thought

First bash:
Kes
This Sporting Life
The Loneliness of the long-distance runner
Goodnight Mr Tom (TV film?)
The English patient
As good as it gets
Pretty woman
Erin Brockovitch
Dr Zhivago
Forrest Gump

In no order at all ..

Empire strikes back
Quadrophenia
The good the bad & the Ugly
Enter the Dragon
Downfall
The Ladykillers (1955)
The Raid
Life of Brian
Gladiator
The Girl with the Dragon Tattoo (2009)

10 just isn't enough

Leon
Shindlers list
Cross of Iron
One flew over the cuckoo's nest
Come and see .

1. Riding in Cars with Boys
2. Empire Falls
3. The Old Dark House
4. Logan’s Run
5. Once Upon a Time in America
6. American Pie 2
7. Little Nicky
8. Any Given Sunday
9. Harold & Kumar Escape from Guantanamo Bay
10. Rocky Balboa

Honourable mentions: The Wolf of Wall Street, American Hustle, Scary Movie 2, Nobody's Fool, Cinema Paradiso, Changeling, The World's Fastest Indian, Clerks II, 42, Boyz n the Hood and Coach Carter.

I really could go on forever

Some of my favorite movies are:
Indiana Jones Series,
Brave Heart,
Die Hard,
The Troy,
Gladiator,
Fight Club,
The Matrix,
and Sky Scraper.

Bad Day At Black Rock
Blazing Saddles
Young Frankenstein
Jungle Book (Disney Version)
The Producers (original)
Day at the races
War of The Worlds (original)
The Inspector Calls
Green For Danger
Goldfinger

Some I know not politically correct but they make me laugh. Who could not forget lines like "Mongo only pawn in game of life" or "I don't expect you to talk I expect you to die"

Godfather
Casino
Once Upon a Time in America
Goodfellas
Get Carter
The Deer Hunter
The Terminator
The Departed
The Good the Bad and the Ugly
Trainspotting

and in 11th place........ Con Air

I love the GBU but I love for a few dollars more equally.Two classics.

One flew over the Cuckoo's nest.
Kes.
The Elephant Man.
Goodfellas.
American History X.
Mississippi Burning.
Close Encounters of the third kind.
American Werewolf in London.
Terminator 2.
Die Hard.


Edit - Just seen The Deer Hunter above, can't believe I missed that one!

10 more that I don’t think have been mentioned much, all favourites of mine

Unforgiven
Planet of the Apes (the original)
12 Angry Men
Office Space
This is Spinal Tap
Conspiracy
Pale Rider
Das Boot
Lawrence of Arabia
The Cruel Sea

This is Spinal Tap - Turn it up to eleven !

Inherit the Wind (original)
Did you used to be R D Laing?
Power Struggle (short low budget from Hull filmmakers on youtube)
This Sporting Life
The Life of Brian
I married a Strange Person
Citizen Kane
Dark Star
Dr Strangelove
The Harder They Come

In no particular order

The Shawshank Redemption
Schindlers List
Rounders
Sleepers
Casino
Alive
The Long a good Friday
Alien
Star Wars
JFK

In no particular order:
No country for old men
Usual suspects
Pulp Fiction
Shaft (original)
Godfather 2
The Accused
Alamo
Sex lies and videotape
Sixth sense
Blair Witch