Amy Smart

Height: 5'6"

Cardio workout: Amy stars in Crank, the adrenaline-soaked roller coaster that has baldie secret assassin Jason Statham pumped with a poison that will kill him if his heart rate slows. No worries. This super-sexy sweetheart has what it takes to keep his (and our) hearts thumping. If all else fails, she can always play her revealing love scene from Road Trip.

Amy Smart