If you were roaming the aisles of the Licensing Expo 2011 in Las Vegas you might have come across this image of lifelike versions of the team from Joss Whedon's upcoming Avengers film.
This seems to be our first good look at Iron Man, Captain America, Hulk, Black Widow, Hawkeye, and Thor, all together in their glorious movie versions. Being at the Licensing Expo, you can imagine that this poster is intended to help grab partners to emblazon these images all over as many products as possible in the coming years.
It would have been cool to see an image like this with the real actors, who could never have actually held those positiions in real life, but I guess that's what you get in the transition from comics to the real world. Either way, this is very likely a lot like they'll look all together in the movie.