schizopolis
time and tide
being there
oldboy
seven samurai
rashomon
yojimbo
chunking express
2046
hard eight
if all else fails check imdb.com and find obscure films that directors, cinematograpers, actors, or whoever's work you like have made.
i personally like christopher doyle (cinematographer), akira kurosawa, soderbergh, kubrick, wong kar wai, p.t.anderson, wes anderson, luc besson...
also, check the trivia on films you like. many directors steal from their inspirations. tarantino is great, but it's no secret that the man borrows heavily from other filmmakers. city on fire was much of the basis for reservoir dogs and kill bill is almost entirely homage to the films of the 70's that he grew up loving. kubrick was heavily influenced by charlie chaplin (as many other filmmakers over the years have been). dig deeper and research the films and filmmakers you like.