The AFI came out with their "Best American Films of All Time" list in 1998.

Here's my choices for the best of all time, in no particular order:

• Stanley Kubrick..."2001: A Space Odyssey"
• Orson Welles..."Citizen Kane"
• Wong Kar-Wai..."ChungKing Express"
• Charlie Chaplin..."The Gold Rush"
• Quentin Tarantino..."Pulp Fiction"
• Steve James..."Hoop Dreams"
• Darrin Aronofsky..."Pi"
• Alfred Hitchcock..."Psycho"
• Alfred Hitchcock..."Vertigo"
• Michael Moore..."Roger & Me"
• Robert Lepage..."Le Confessional"
• Francis Coppola..."Apocalypse Now"
• James Whale..."Frankenstein"
• Martin Scorsese..."Raging Bull"
• Peter Fonda (?)..."Easy Rider"
• Tranh Ahn Hung...."Cyclo"
• The Hughes Brothers..."Menace II Society"
• Spike Lee..."Do the Right Thing"
• Tim Robbins..."Dead Man Walking"
• John Woo..."The Killer"