Inspired by the ten million new threads in the sport section...
1. Mewtwo
2. Zapdos
3. Charizard
4. Blastoise
5. Venusaur
6. Mew
I've gone for balance here... a strong Pokemon of each type. The pyschic ability of Mewtwo combined with the flight and electric power of Zapdos, the blazing fire of Charizard, the aquatic brilliance of Blastoise, the growing natural ability of the grassy Venusaur and the allrounder "Mr.Fixit" nature of the versatile Mew would prove an unbeatable combo.
(And yes, this is a piss-take if anyone actually wasn't sure..)