I know he filmed a whole bunch of cameo scenes back-to-back so they could be inserted into various Marvel movies, but I don't know if they've already been used or if there are still some in the queue.
“I really hope I’m behind this convoluted mess; at least that way I’ll be able to get revenge by doing this to myself. I won’t even have to feel bad because it’ll be all my fault.” - Harry Potter, The Master of Death by Ryuugi.