“There’s a moment where Loki has a kind of a throw-down with the Hulk, and we shot it in two sequences. And Mark Ruffalo is the first actor to play the Hulk in motion capture… I was having to jump up in the air and throw myself onto the floor, which was repeatedly making Joss Whedon laugh behind the monitor—which then made me laugh, but then we couldn’t actually continue with the shooting of the scene.”—
Tom Hiddleston talking about funny moments while filming The Avengers
It’s a miracle he can even play Loki. He seems so full of laughter and smiles all the time. Here he is doing his own stunts, throwing himself down on the ground, and he’s just cracking up. Too funny.