If you aren't a new customer you can get it for $5 which is still a great deal.
Click here to go to Living Social. Sign up for free by entering your email address.
If your city does not offer the Little Fockers deal then click on Los Angeles (You do not need to live in LA for this to work.You will see the movie ticket deal listed for $5 but as a new customer you will be given a $5 credit making it free! Click buy.
These tickets are offered through Fandango.com so click here before you buy and make sure your movie theater has online ticketing.
Here's the small print from the Living Social site:
Limit 1 per person, up to 1 additional as a gift • Movie ticket only valid for showings of Little Fockers. • Offer only redeemable through Fandango.com, and must be redeemed within the next 13 days. Customer may redeem code for a viewing after 1/3/2011 so long as they redeem before expiration. • Theatre availability subject to Fandango.com offerings • The maximum value of each movie ticket is $15; entire voucher value only applies to one ticket. • Promotional value expires on 1/3/11 • Other conditions apply • Promotional value expires on 01/03/11