Tom Cruise is such an adrenaline junkie he's a daredevil off the screen as well as on it. The superstar pushes his body to the limit performing his own stunts in MISSION: Impossible III and confesses he constantly craves the buzz it gives him. Cruise says, "When I'm not working I like to sneak off. I'll just duck out and fly my plane. "It's like everyone in the office is going, 'Where's Tom?' and there's me screaming past shattering the windows and breaking the sounds barrier. No one can phone me up there, I'm off. Working on aerobatics."