Mine plays unedited 720p .avi files fine, doesn't seem to like 1080p, but then I've only tried over allshare. I might try copying one to the actual drive and see what happens. Mind you, to my mind, flawless 720p playback from my server upstairs on my phone in the garden is damn near magical anyway
I seem to be less lucky with .mov, they won't play. Not sure where the files originally came from though, they were Iron Man 2 and, um, something else (Ice Age maybe) trailers in 800x480 mov format. Are we meant to be able to play .mov files on this thing?