EA is running an offer on selected titles until January 8th on its Origin download site, letting you get 50% off your purchase if you buy two games or more.
The "Best of 2011" showcase offer is applicable to certain selected titles. These are: Battlefield 3, FIFA 12, Need For Speed: The Run, Sims 3, Sims 3 Pets, Sims 3 Generations, Sims 3 Ambitions, Mass Effect 2 Digital Deluxe, Crysis 2, Dragon Age 2, Alice: Madness Returns.
Head to the official site for more info.