I noticed that there were some video formats that weren't playable with the included media player, namely avi and mkv's so I went looking for a media player that would be able to play all the various formats. I was surprised vlc wasn't ported over yet but I suppose that project has its own issues Anyway I check xda this morning found a beta for a chinese player rockplayer,awsome app,can play rmvb\avi Fluently! - xda-developers The playback quality of avi files on the evo was great, and it was able to open mkv files as well, but there were a lot of dropped frames in that case. This is only a beta but I hope to see more development on this great app. In the meantime, enjoy the beta version, it still works pretty good!