Origin is having a Mac Sale
Well this is nice. Origin is having a sale, with all Mac games up to 70% off.
Practically every Mac game available on the platform is discounted, and although much of that is merely addon packs for The Sims, there are some great gems in there too such as Batman: Arkham City and er, Portal 2.
The sale will run until the 15th at 10am PST.