Since I haven't inseminated this thread yet , my Top Ten:

Brian DePalma's SCARFACE
John Carpenter's BIG TROUBLE IN LITTLE CHINA
Francis Ford Coppola's GODFATHER PART 1 & 2(tie)
Stanley Kubrick's FULL METAL JACKET
Walter Hill's THE WARRIORS
John Frakenheimer's RONIN
Frank Darabont's THE SHAWSHANK REDEMPTION
John Milius' CONAN THE BARBARIAN
Phillip Kaufman's THE RIGHT STUFF
Martin Scorsese's GOODFELLAS

Honorable Mentions:

Alex Cox's REPO MAN
Peter Jackson's DEAD ALIVE
Lloyd Kaufman's THE TOXIC AVENGER
Sergio Leone's THE GOOD, THE BAD, & THE UGLY
Tony Scott's TRUE ROMANCE
All of Tarantino's movies.
John Carpenter's THE THING
Stanley Kubrick's THE SHINING
Sir Ridley Scott's BLADE RUNNER and ALIEN
Martin Scorsese's TAXI DRIVER and THE LAST TEMPTATION OF CHRIST
Many Steven Spielberg movies(JAWS, Indy films, CLOSE ENCOUNTERS, etc.)
George Lucas' THX 1138(and of course STAR WARS)