Hayden Panettiere punks Dianna Agron, Zac Efron and Snooki.
All The Way Up
Dianna discovers she's being punked, and Zac Efron finds himself in the middle of a slow-speed pursuit.
Step It Up
Hayden watches as Zac Efron tries to avoid jail time after getting pulled over for a hit-and-run.
Not Getting Involved
Snooki gets an eyeful when she watches a love triangle play out at the house next door.
Don't miss an all-new episode of 'Punk'd,' Thursday at 10/9c.