Stop and Listen… Mad Men Cast + “Never Gonna Give You Up”

Boyfriend and I have started watching Mad Men on Netflix, and I’m kind of in love with it. 
I also love silly YouTube videos, and cover versions of great songs.
When you put those three things together, this is what you get.
The Cast of Mad Men performing “Never Gonna Give You Up” by Rick Astley.
What are some of your favorite YouTube videos?