How One Improvised Line Changed The MCU Forever

Thank RDJ for Marvel not adapting the comics purely...

For more awesome content, check out: http://whatculture.com/
Follow us on Facebook at: https://www.facebook.com/whatculture
Catch us on Twitter: https://twitter.com/whatculture

Voiceover: Adam Clery.
Script Writer: Adam Clery.
Video Editor: James Peart.