I like watching movies at night to help me relax before sleeping. So I'm not really looking for something that will make you start thinking deeply and keep you up at night.
One that I can recommend is "Scott Pilgrim vs the World"
Most Helpful Girl
zombieland, very funny0
Most Helpful Guy
Why under what 90 minutes that's lame
I don't know how long it is but Kick-Ass is pretty great.
Superbad is funny as fuck and pretty lighthearted.
The Kings of Summer is entertaining but it could make you think possibly.