'Iron Man 3': The Story Behind Mark Ruffalo's Top Secret Cameo

[From MTV NewsAs with all of Marvel's movies, "Iron Man 3" ended with an Easter egg — this time, a little button of a scene between Tony Stark (Robert Downey Jr.) and a decidedly unengaged Bruce Banner (Mark Ruffalo), as the eponymous superhero recounts his post-"Avengers" experiences.

According to Mark Ruffalo, that scene was conceived and abandoned at least once before time actually came to film it.

"There was some talk of it, and then I heard we weren't going to do it," Ruffalo told MTV News while promoting "Now You See Me" in New Orleans. "But then I saw Robert at the Academy Awards, and he pulled me aside and said, 'Hey, I have this idea. What do you think?' "

Watch the interview above and be sure to head to MTV News to get more scoop.