The first bit gets especially funny when you've read David Mitchell's memoir. I don't know if they meant it to be some kind of self-aware reflection on their own relationship, but David mentions that each of them used to try and outdo the other every night when they did theatre. They had been working together for so long and on so many different projects that they were sick of each other. Every night, one of them would stand further and further from the crowd whilst talking to the other so that more of his face would be visible to the audience and more of the back of the other person's head. Literally upstaging one another. So that might have been the inspiration for this sketch.
Honestly the idea of a play where the actors swap roles night by night, or two cuts of the same film with the actors swapped is fucking amazing and i want to see it.
i'm just laughing because i love sherlock holmes and imagining holmes randomly smashing a vase over watson's head to make a point is the funniest thing ever
"Well, certainly I'm sufficiently insecure to have felt the need to establish to my own satisfaction, before the age of 33, whether or not humans can fly. That makes me a chippy little autodidact in your eyes, then so be it."
This is my favourite. The "acting" portion of the sketch has a phenominal premise and the "break" section has some of the best line delivery I've ever witnessed!