Karl Munchausen left a comment about this great blog widget he came up with. Unfortunately, it's too wide for the side bar of my blog template, so I'll just put it in a post until he can come up a smaller one (200 pixels wide would be just about right, Karl!).
Update: Karl e-mailed me to let me know he's got a second, narrower version of the widget up now. Run along now and get one for your blog, too!