Personally I've given up on Movies & I'm just concentrating on TV Shows...
I couldn't agree more. I enjoy watching my movies, but I don't mind popping in a DVD every once in a while for those. It's far more difficult to pull out boxes of TV shows and figure out which disc has which episode and most boxes don't have a synopsis for each episode included making it that much more difficult to figure out which one you want to watch.
I have about 140 movies in iTunes, and 1900+ episodes of TV shows. I'm in love with my Apple TV. For the time being, it's the 2nd best investment I've made (first being my glorious MBP). Soon I'll be getting a 50+ inch flat panel TV to further enjoy the Apple TV and all my shows. *dreamy sigh* Can't wait.