Instagram/Johnny Knoxville Movie Johnny Knoxville's final Jackass stunt: a massive explosion that made locals think a plane had crashed. The explosive end of an era. April 20, 2026 AceShowbiz - Johnny Knoxville, co-creator and star of the iconic MTV stunt series Jackass, made a dramatic exit from the franchise by orchestrating a massive explosion during its final day of filming. The event took place in Simi Valley, where the enormous blast sparked concerns among local residents who reportedly feared a plane crash had occurred.