If you stayed after the credits of Captain America, you have already seen this. If you saw an advanced screening of Captain America like me, you did not get to see it. I can’t tell you if there is more to than this than what is shown, but I love what is shown. It starts out with what is shown at the end of Captain America (before the credits) and then goes into a teaser trailer of sorts for The Avengers. Iron Man, Thor, Hawkeye, Black Widow, Captain America, The Hulk, and Nick Fury are all in this movie and their respective actors. So basically, this is the biggest superhero movie ever. Josh Whedon is directing and he also wrote the script.
The Avengers is in theatres May 4, 2012.