[Voron]

Snatch, Braveheart, Pulp Fiction, Clerks all have great replay value.

I think it's the dialogue that makes movies addictive. Whereas great visual scenes might amaze you at first time you watch them, they will bore you the second time you do, but great dialogue seems to get better and better with each viewing. Guy Ritchie, Kevin Smith, and Quentin Tarrentino (sp) are notorious for creating extremely witty and charismatic characters, which translates to terrific dialogue.