9. Stan Lee's Cameo
Stan Lee's cameos are always good for a laugh, but not always necessarily a highlight of the movie they happen in. His original cameo in The Avengers was cut and replaced with the brief piece of news footage featured above, but Avengers: Age of Ultron more than makes up with that with a particularly funny scene involving Captain America and Thor. During the party scene in Avengers Tower, some veterans who Cap presumably served alongside in World War II can also be seen enjoying the party, but when Stan Lee tries a special drink Thor (who he calls "blondie") has brought from Asgard, the next scene cuts to Steve and the God of Thunder helping him from the party as he slurs, "Excelsior!"