I just recently switched to macs and I have to say I absolutely love them. I picked up the new macbook pro from the apple store yesterday, and so far I LOVE the machine. I was particularly astonished by the massive battery life that it provides. I want to keep the battery as healthy as possible, so I have a few questions: Should I run my mbp on battery or the power cable? I tend to watch videos on websites--youtube, abc, etc. and movies, and tv shows on the internet quite a lot. Should I watch these shows on battery, and ONLY plug it in when the battery is low, or should I try to use the power adapter whenever possible. Is is a good thing to constantly drain the battery every few days--as demonstrated by watching videos? Also when I'm not using the mbp--night, when I sleep--should I put the mbp to sleep or turn it off? Thanks a lot for your help, guys!