I've added a label cloud!
I admit I wasn't too comfortable playing with the html and I'm still trying to decide where on blog to have the cloud.
If you're interested, the code came from WebWeaver's World. I followed the directions exactly, and hey, it worked! There are some things you can change; for example, I set it to show only labels I have used at least 10 times, and also changed the maximum and minimum font sizes. The instructions are very clear.