Our own Yannis created a thread for the winner earlier today: here (Audi RS4 is "Performance Car of the Year".)

Here are the full results

1) Audi B7 RS4
2) Porsche 911 Turbo
3) BMW Z4 M
4) Porsche Cayman S
5) Mistubishi Evo IX
6) Mercedes-Benz CLK63 AMG
7) BMW M6
8) BMW M5
9) Holden FPV F6 Typhoon
10) Sickem STI
11) Nissan 350Z Track
12) Volkswagen Golf GTI
13) Lotus Exige S
14) Holden Commodore SSV
15) Volkswagen Golf R32
16) Ford XR6T (man)
17) Ford XR6T (auto)
18) Holden HSV GTS
19) Ford Liberty GT-B
20) Ford XR5

Thanks to GTRFreak on Supercars.net for the information