AllPlayer Group people have released the Catzilla 1.2 version today. Have you guys tried this benchmark yet? It has a wicked sound track and interesting graphics. It also scales with multiGPUs very well. Good way to test your system and if you feel competitive, you can also jump to HWBOT and submit a score and see how well you do against thousands of other scores on their database.
Check it out on YouTube as well to see what it looks and sounds like.