Bill Gates delivered a speech yesterday where he presented a few more details about the upcoming “Tablet PC” – a flat, lightweight screen to tuck under your arm and use everywhere. Lots of cool tricks built into it for voice and handwriting recognition. Mr. G. predicts it will be the most popular form of computer in five years. Are you listening? BillG doesn’t necessarily say things like that lightly. Here’s Microsoft’s web site about the Tablet PC, and here’s a decided skeptical overview of the information available so far.