Wow, I'd love to have wifi on those plane trips... the closest I've gotten is quite high-speed on a ferry ride between Newfoundland and Nova Scotia. It was around a 6 hour ride, and I only had enough battery to last 3 hours...
If I'd only known, then I would have tried to charge two batteries (this was my Powerbook, not a PDA...)
But yeah, wifi is getting... Everywhere nowadays. It's quite nice. ;D
Edit: Whee, post 100 for me....