Apple® - Mac Pro - 2 6-Core Intel® Xeon® Processors - 12GB Memory - 1TB Hard Drive - MD771LL/A for $2,499.99 + free shipping
Hate if you want but this is a hell of a deal. Selling on Apple.com for $3800. Amazon has price matched as well. There are rumors of a refresh in the spring, but dual 6 core Xeons and 12 GB of RAM should keep you good for a while.