Zac Efron risked the wrath of movie bosses when he bungee jumped off a bridge in Vancouver, Canada last year (09) - he breached his acting contract by performing the dangerous stunt.
The former High School Musical star turned daredevil for the day during a break from filming new movie Charlie St. Cloud.
Efron admits he signed up for the activity on a whim, but later found himself in trouble with his superiors.
He explains, "You're actually not allowed to do it. I got in really big trouble. In your contract you're not supposed to do it. It was a lapse of judgement. Believe me, I could have been reamed. I probably shouldn't have gone. We decided at two in the morning the night before."