This week I finally got around to protecting my TabletPC with Bitlocker.  My laptop holds my entire life, and I take it everywhere with me, so I'd be hosed if if it were ever to fall into the hands of a bad guy.  But not anymore.

One piece I wasn't aware of until I actually locked my drive this way:  every time I do a cold boot of the machine, it asks me for a special PIN--before I even get to the regular login and password.  Since I only cold-boot once a week or so (the rest of the time, I just put the laptop to sleep), this isn't much of a hassle. But it's nice to have the peace of mind, knowing that nobody can get to my data.