I needed to order some things from ThinkGeek anyway though, so I tossed a few interesting things in there for the ride, which is really why I got this. Here's a photo-review beneath the cut.
I'm a fan of this stuff already. It says you can re-use it for a number of keyboards until it gets saturated with gross. I'm going to put that to the test for sure. I already tried it on my mouse, and it did a decent job there as well.
If your keyboard is filthy and don't want to toss it, give this a try.