Apocalypse Now: Marlon Brando, Martin Sheen, Robert Duvall, Laurence Fishburne, Harrison Ford, Dennis Hopper, Scott Glenn, Frederic Forrest. Classic cast.
Close second would be True Romance, as mentioned earlier.
Also Heat: De Niro, Pacino, Val Kilmer, Tom Sizemore, Jon Voight, Ashley Judd, Natalie Portman, Hank Azaria, Henry Rollins (class), Danny Trejo (you know what you are getting with ol' Danny Trejo!!), Jeremy Piven
Close second would be True Romance, as mentioned earlier.
Also Heat: De Niro, Pacino, Val Kilmer, Tom Sizemore, Jon Voight, Ashley Judd, Natalie Portman, Hank Azaria, Henry Rollins (class), Danny Trejo (you know what you are getting with ol' Danny Trejo!!), Jeremy Piven