James Corden wouldn't strike you as the obvious choice to play Matt Damon's stunt double in a Bourne movie (or any movie for that matter) but Jason Bourne star Matt felt that it was only fair that Corden step into the breach after he agreed to appear on The Late Late Show. 

As you'll see in the video, being a stunt double is much more dangerous work than you'd be led to believe. 

"The action is gritty and real — we don't use crash pads," explained Damon. "If you know there's a crash pad there, then I know there's a crash pad there, and that means the audience knows that you know that I know that you know there's a crash pad there, and it's all just kind of ruined."

Via THR