I think the powerpoint gadget could be pretty useful, if you ever give PPT presentations (which I don't).
At this point the only one I really use is the WMP gadget. I've tried a few other remote media control programs, and this works as well as any. It's good for controlling music at parties, etc.
The home screen looks good, and has some nice animations between gadgets. The rest is fairly plain. Functional, logical, and easy to use...just not pretty. Here are some screenshots of the WMP and Mail gadgets if anyone is interested. There is also a Today plugin that you can see in the last shot.
