A passenger tried to force open an emergency exit mid-flight. Bad move. Standing in his way was a Jiu-Jitsu practitioner who had spent thousands of hours training for a scenario with a 0.0001% chance of happening. His moment had finally arrived.
During this scene, Jim Carrey completely forgot his lines, so he improvised a random song on the spot instead and the unexpected moment was so good it ended up in the final cut.