3. "I'm Serious, And Don't Call Me Shirley" (Modern Warfare)
Modern Warfare actually had within it a completely secret level that many of us would totally miss out on thanks to the ability to skip the lengthy credits. However, unlike many developers, Infinity Ward tucked away a reward for sitting through the entire crawl, resulting in the brilliant hardcore player-testing 'Mile High Club' hostage mission. Whilst this could be considered an easter egg itself, the dialogue between two members of your squad is what makes it even better:
"We're going in deep, and we're going in hard" "Surely you can't serious?" "I'm serious... and don't call me Shirley"
These lines are taken from the fantastic spoof Airplane!, where Leslie Nielsen's character repeats this line multiple times. https://www.youtube.com/watch?v=PER2eHRCg0s
