Yeah! I was at the Technology museum in San Jose today and I got to ride a Segway. At first, it's not very intuative, you just feel like you're going to tip over when you lean, but you get the hang of it fairly quickly, and it becomes pretty natural. Still, US$5k is a bit too much to drop on something that amounts to a really neat toy.
Click here for a video of me riding the segway. It's pretty big, so don't download it over dialup.