top 250 movies: http://www.imdb.com/chart/top?
Just noticed, Django on number 41

Movies for 'starters':
Godfather I and II(1970) : dark atmopshere
Seven Samurai(1954) : about life, friendship... Also great action movie
If you really into cinema, i can recommend:
Rear Window(1954): hey, hitchcock !!!

Spirited Away(2001): a girl dealing with monsters. You scared ??