I was just wondering what format everyone uses to watch movies on your macs. Everyone in my dorm is totally stoked on the Divx and Xvid formats but I couldnt seem to get them to run on my girlfriends ibook. Also I was wondering what formats offer the best compression/playback quality? I plan on buying the next revision of PowerBook and using it to rip DVDs and such so I was just wondering what software I will need. Thanx for all the help.