Harry Potter Sets Never Seemed That Violent, Until That Time Jason Isaacs Got Mad And Knocked Himself Out 'It Was One Of The Worst Days Of My Life': Domhnall Gleeson Shares Disastrous First Day On ...

When asked about his favorite prank from the Harry Potter movies, Radcliffe’s said his took place while they were filming Harry Potter and the Prisoner of Azkaban. “There’s a shot in the Great Hall of ...

Pranks were common on the Harry Potter set, and Radcliffe was both the victim and perpetrator of several behind-the-scenes shenanigans. But there was one prank Radcliffe felt may have trumped all.