If you've been thinking of going to see Joy Behar tomorrow at the Comedy Connection Wilbur Theatre but balked at the $32 ticket price, you can go to Groupon now and get tickets for $20.
I've used the service before, and it's pretty handy. The way it works is that a certain amount of people have to take the deal before it becomes valid. But only five people had to buy Behar tickets for that to happen, and when I checked last, they had sold eighteen tickets. Deal expires at midnight, so if this is something you could use, take a look.