AAA has dicounted passes but you have to order them in advance and have them shipped to you.
The same is true of Bordersrewards.
If you have a signature Visa card, you can get $25 in Fandango bucks for $20. You can redeem the code for tickets immediately after purchasing.
I haven't seen any groupon or living social movie ticket deals since the problem with one of their vendors last fall.
ETA - Fandango and Visa Signature have also teamed to give you 2-for-1 tickets on Fridays until 7/29/11.
http://usa.visa.com/personal/visa-s...sp?eventId=33269&pageId=15624&signatureFlag=6