This has to be one of the best Avengers articles I've read:
http://collider.com/joss-whedon-the-avengers-cast-interview/159372/Highlights:
So, when I read it and saw that it was my fanboy wet dream of an Avengers script and that Coulson was a big part of it, that was the great day for me. I just drove around the streets with the script in the other seat, giggling. Getting to play with Thor’s hammer while he stroked my bow.I don’t know video games either. The last video game I played, apart from Dance Dance Revolution at Jeremy’s house, which I was very good at – Scarlett [Johansson] and I will always have “Billie Jean” – was Super Mario Kart on the Super Nintendo. I’m from the Dark Ages.Nobody Lambadas like LokiBut if you're avoiding spoilers, STOP reading after Tom's answer to "Did you have any trepidation about playing such an iconic character as Loki?"