Well I use my xbox all the time to watch movies and tv shows. last.fm is nice also for when cleaning the house and want to jam or having a party and want to put some music on. The facebook app is kinda cool. Pointless for the most part but still cool and I use it every once and awhile. It always hooked me up with friends that I didn't know where on live.

As far as the trophies. It just seemed like a weak attempt to copy xbox's achievements.