> <i>Just think about it on an airplane. I could load it up with movies and watch for an entire flight, thanks to the iPad's excellent battery life. Of course, because of the lousy keyboard I can't use it in place of a laptop, so I would have to carry the iPad and my MacBook. How is it that, for years, I've pined for a lighter laptop, and now I'm considering carrying an extra pound-and-a-half just to watch videos on an airplane?</i><p>Or, don't. The iPad goes with you into the seat. Apple's wireless bluetooth keyboard goes in your carry-on, and stays there until the hotel room desk where you might actually do some typing. The rest of your business trip, the iPad lets you reference things, make minor edits, show Keynote on a VGA projector, and keep up with email and news.<p>(And for printing at the client's location, you do the same thing with your iPad you do with your "real" laptop: email the client the file for them to print because their IT won't let your laptop see their printer queue.)