There is also the quad-core server Mac Mini
2.0GHz quad-core Intel Core i7
Dual 500GB 7200-rpm hard drives1
Intel HD Graphics 3000
I know it is a server, but I have heard of people using it as a stand alone computer.
I should clarify that I will only be doing light After Effects work, but that will be the most intense program I will likely use on whatever computer I buy. For the most part I will be editing with FCP 7 and Premiere.