I just wish to say thank you to this list for helping me out with my DVD questions. I had no problems at all with any of my "in flight movies". As recommended I just left my iBook in sleep mode when not in use and all was well. I had great battery life to boot! Only problem seems to be the audio of some movies are not as loud as others making listening a little difficult with or without headphones. Comparing to my iTunes the volume in DVD player is really too low. Overall just a minor detail that I am assuming has to do with the decoding of the DVD (Dolby surround issues?) compared to plain old MP3 audio. I must say it was a real surprise to see the number of Apple laptops (not to mention iPods) that I did see in airports and on the flights! Now I must admit that I am seriously considering upgrading to the 15" Powerbook after playing around with one for awhile. As usual this list is a great source of information. Keep up the great listing! Ken