For those who haven't been paying attention then bloody hell what the heck have you been watching? Hawkeye cameoed in Thor as did the Tessaract (aka the Cosmic Cube), Nick Fury cropped up in Iron Man, Iron Man 2, Thor and Captain America, the super soldier serum got name checked countless times in the Incredible Hulk and Thor's hammer and a prototype of Captain America's shield appeared in Iron Man 2.
Of course there were other references on the build up to the Avengers, but jeez that's not what I'm here to talk about so quit buggin' me, will ya?! Instead the subject of this Top 5 are the those post-Avenger references that work towards the larger Marvel Movie Universe. You know, those post-Avenger references that you either forgot about or missed altogether! An Avengers Assemble spoiler is ahead... you have been warned.