Please help me buy an iPod

Not for me, doesn't interest me at all. The wife wants an iPod for her weekly 1.5 hour commute. Her HP notebook w/ XP media center came loaded with iTunes software. She needs something easy to learn and operate with a fairly long battery life (she's always forgetting to charge her mobile phone). I was wondering if the new video gadgets would be too complicated for her to catch up on a missed TV show (Lost is big now). If not for the video, I don't think she would need that much storage. Not a lot of music, maybe some photos. As always, thanks in advance.