There is a YouTube video featuring a guy named Tom who apparently does all sorts of cool things. For this show, his challenge is to take off and land an actual next-gen Boeing 737.

https://www.youtube.com/watch?v=OcrpR1YI1qc

He gets a work-up in the simulator, and the climax of the show has him sitting as an FO with a CKA in the CA seat, another pilot (probably qualified) in the jump seat, and a camera guy. He takes off and lands the 737, a bit shakily.

Right away, I thought "This cannot be legal". The 737 is certified for two qualified pilots, and this guy has at best an SEL rating, if that.

Q. for the hive - is this stunt legal? Assuming the jump-seater is qualified, what is the plan for an engine blowing up at V1? Swap seats really fast?