1. "Are You An Alien?"
After falling from the Helicarrier, the Hulk crashes to Earth and swiftly transforms back into Bruce Banner. When he wakes up, Bruce finds himself confronted by a security guard who asks him whether or not he's an alien. That line has a brilliant double meaning - Harry Dean Stanton was a member of the crew of the doomed Nostromo in the 1979 classic Alien. The actor only ended up making this cameo appearance because cinematographer Seamus McGarvey was shooting the documentary, Harry Dean Stanton: Partly Fiction at the time. An excited Joss Whedon wrote 12 pages of dialogue for this scene, but had to cut it down dramatically. Are there any other crazy The Avengers facts out there? Share them down in the comments.