This doesn’t happen very much: I wasn’t the only one on my flight home last night that had a Tablet PC. The couple in front of me watched a movie on a Toshiba M4. While deboarding the plane I asked them what they thought of the Tablet PC. His response: He’s still learning about it. So far he loves it for presentations, although on the movie side he just found out that he couldn’t make it through a complete movie without swapping batteries.
It sounds like he was prepared though with a second battery–often a good idea–even if they are often expensive to pick up.
That reminds me, I need to get a second battery for my Toshiba M400. I don’t want to have to worry all the time about playing musical power outlets with others at the airport.