Thought I'd add a number film, mainly because I wasn't sure if 2001: A Space Odyssey should be put under S or T.
# - 2001: A Space Odyssey
A - Apocalypse Now/Alien
B - Blade Runner
C - Citizen Kane/Chinatown
D - Dr. Strangelove
E - The Empire Strikes Back
F - Fargo
G - The Godfather
H - Halloween/High and Low
I - Ikiru
J - Jaws
K - The Kid
L - Lawrence of Arabia
M - The Maltese Falcon/M (1931)
N - No Country for Old Men
O - On the Waterfront
P - Pulp Fiction
Q - The Quiet Man
R - Raging Bull
S - Sunset Boulevard
T - Taxi Driver
U - Umberto D
V - Vertigo
W - The Wizard of Oz/Willy Wonka & the Chocolate Factory
X - X-Men 2
Y - Young Frankenstein
Z - Zelig