It's by Fleetwood Mac:
It's funny to watch Paul Rudd dance to this song in the 12-7-2013 episode.
Too bad that's not on YouTube,
Stashed in: Music Videos!, SNL
MACKLEMORE and RYAN LEWIS - THRIFT SHOP (NSFW) FEAT. WANZ (OFFICIAL VIDEO)
Nine Inch Nails - Came Back Haunted
Now we use data from the Internet to see what you've been up to lately. Ew. ~Dilbert pointy haired boss Hiring Manager
Friendship High Five gif - Tina Fey and Kenan Thompson