MPEG please. It's a pain in the ass for me as a Linux user to fire up my Windoze box just so I can watch some pr0n
Plus like other people said MPEG don't need any special codec installed. While with WMV if you want to watch a file encoded with a newer codecs then what you have on your system the user has to let go of his schlong and hit on the OK button on the upgrade dialog box. Wait for the new codec retrieval to finish (if it every does; most of the time it just hangs because M$ is not getting the shit together) and your user's woody goes away. Next they'll be spending their money on Amazon. So; MPEG please
