Thanks to a former co-worker, I got an invite for Google Wave.
The biggest problem right now with Google Wave is finding other people to interact with. Chances are that few of your family, friends, or co-workers have access to Wave yet. I've set up a public wave for readers of this blog. If you are a waver, feel free to play with it:
(If that link doesn't work, then try entering "with:public undefined value" in the Google Wave search box.)