If you running OS-x 10.x on your hackintosh, you can try Plex or Boxee for Mac, but then again they both work fine (or better) on regular linux and windows.
Basically, if your netbook video card couldn't be used by Plex/Boxee - it'll make both useless since Atom processor is way too weak to handle anything more than plain vanilla dvd (mpeg2) and thats on the good day
My htpc running on Ion platform, and due to included nforce 9400 gpu im able to watch 1080p/dts videos on it without any slowdowns