Well in a surprising step Apple is now allowing users to use VLC video players with their apple products. If your not familiar with VLC then I can tell you its one of the best video players out there and it supports a multiple different types of videos. VLC is my current default video player on my PC. In the past with Apple you have been limited to what kinda videos you could use on your ipod's, iphone's and ipads so this is a big step for apple users. Basically it means no more converting if you want to watch videos that are not MPEG4 or H264.
http://bit.ly/cKdZK6