Go to http://isnoop.net/gmail/. For those of you who have already gone there before and spent hours trying to snag an account, don't worry. As of right now, they have 596,421 to share, no waiting or trying to grab the next one that comes along. Just enter you email and you will get an invite. Enjoy.

EDIT: Sorry, I didn't see that this had already been posted. Consider it an update on the numbers