If you have kids (or even if you don’t), you might want to check out Battle for Terra on bluray. I’m still not sure how well I liked the movie, but the surround sound was very good. It was an interesting concept having humans invade an alien planet instead of the other way around.
Something I thought was interesting was in the “Set Up” at the main menu. Under the audio options there were 2 choices. One was Dolby Digital 5.1; the other said “Uncompressed Linear Pulse Code Modulation 5.1″… said nothing about TrueHD or DTS-HD.