We all think of the greatest level of quality in a home theater to be HDTV with 1080P. This gives you a great big picture of 1920 x 1080resolution, this is better than your computer that you are reading this on is very likely. There is another thing to think about thoug that is written about in the following article.
High-Def FAQ: What’s the Big Deal About 1080p24? | High-Def Digest
The difference to think about is frames per second. In a movie we are used to seeing 24 frames in one second and for full motion video we can see a difference between 20 and 24 frames per second. Video games on the other hand will need 60 frames per second for you to be very satisfied because our context changes so quickly unlike a movie. The above article does a great job in describing the difference between different 1080P resolutions.