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
Rite of Spring 100th anniversary: watch animated score for Stravinsky masterpiece. (VIDEO)
KONGOS - I'm Only Joking
I've Been Everywhere Man - Johnny Cash
American men’s hidden crisis: They need more friends! - Salon.com