Ok, am a touch bored, so will start out a movie game i saw online a while ago and see how far we here can take it.
Main rule: No repeats on movie titles or actors/actresses.

I'll start off the first few to get it going, jump on in and keep it up!

Tom Cruise was in War of the Worlds with Dakota Fanning...

1. ...who was in I Am Sam with Sean Penn.

2. ...who was in Mystic River with Tim Robbins.

3. ...who was in Jacob's Ladder with Danny Aiello.

Now jump in with #4 and lets keep it going! lets see how far we can take it without any repeats!

ps. try not to use imdb!!! at least not till we've exhausted most possibilities.