"If the Avengers are the Partridge Family, Nick Fury is Reuben Kincaid." – Joss Whedon
When I first read the above quote, my retro-infused imagination immediately seized upon the words "the Avengers are the Partridge Family" and the following thing is what popped out.
For viewers who are too young to remember the Partridge Family and therefore don't know the relevance of the little birdies, here's the title sequence so you can sing along!