I've watched a full length movie...

on my Treo today (Truth About Cats and Dogs) and it didn't even put a tiny dent into my battery life. This is so cool. The only thing that I have seen as an issue so far is that occasionally the movies (.avi format) on my card get corrupted and I have to re-copy them onto the card from the computer. It really isn't a big deal, and it also might be from all the messing about I'm doing testing different sizes and such, but it is possible.