In terms of media player:

Still doesn't play or recognize ogg files -- no surprise there.

Finally recognizes my xvid files and tries to play them -- but fails miserably. The xvid files are 320x240 with 128 cbr mp3 audio and were converted with 75% quality via autogk. They play beautifully on the sharp zaurus BTW.

Another complaint is that seeking (skipping through file) doesn't seem to work with video files that are otherwise playable.