Today’s Groupon is a $89 rooftop Cubs ticket at Skybox on Sheffield (3627 N Sheffield). All you can eat and drink is included in the price.
Buy as many as you like for your friends, but these are not for resale.
There are 7 games available - this page is for the Monday 5/25/09 game at 7:05 PM vs the Pittsburgh Pirates.
Click here to learn more about Skybox on Sheffield and to buy tickets for the other 6 games.