Hey, i'm looking for some Movies to buy/rent on Bluray to play on my PC

Got a 24" Full-HD Screen and a 7.1 Headset recently and watching movies with these is a blast.

Recently i watched The Lord of the Rings Trilogy (each is about 3,30h long) and Inglorious basterds.

Anyone have any good movies to watch?

I'll be watching 7 Pounds with Will Smith tonight, that one seems quite interesting.

PS: Does anyone know whether there are any older movies with good hd quality?
PPS: Any games where 5.1/7.1 actually drastically changes the gameplay?