Google Wave Invites
It's been almost a year now since Google unveiled Google Wave to a limited number of people. Google Wave is still in invitation only. I will not go into details about what Google Wave is, learn more about it here.
If you would like to give it a try, I am giving away some invites. I have given away a few ones, and it appears that the invites are sent out right away. Leave a comment and add your email or contact me here.
Update: May 19, 2010. Google Wave is now open to the general public.