A few deals to take advantage of this weekend:

Starbucks is offering a BOGO offer through Sunday:

Buy 1 Holiday drink, get 1 free. Give it to a friend, make a new friend! 2-5pm today-Sunday.

Chipotle is offering a special as well tomorrow:

Check-in at Chipotle using Facebook Places Mobile on your smart phone on Nov 20-21, show your phone with the check-in offer on your screen, and get a BOGO (Buy-One-Get-One) burrito, bowl, salad, or order of tacos.
How to do it:
In order to qualify for the BOGO, you must be physically at the restaurant. Then, you’ll need to check in at that restaurant either through the Facebook Places Mobile app on your smart phone or, if that is… not possible for you, through touch.facebook.com on your smart phone’s web browser to qualify for the BOGO. This BOGO offer will pop up as a deal at the restaurant at which you check in. Show that deal to the cashier from your phone.
How not to do it:
Posting “checking in” on the wall of this particular Event, posting “checking in” on our or your Facebook page wall, changing the status on your own Facebook profile to say “checking in at Chipotle,” and other non-geo-locational check-ins, unfortunately are not acceptable check-ins. Sorry.

Here is a helpful link too, if you have further questions on how to do it: http://blog.facebook.com/blog.php?post=446183422130