Come for the joy that is Carol Burnett, stay for her butchering of Zach Galafianakis's name (made all the better by the fact she has no idea who he is).
If you don't know who Carol Burnett is, take several hours out of your schedule to educate yourself on YouTube because she deserves attention and respect, then come back and watch her take part in Jimmy Fallon's 'Whisper Challenge' during which she does what we all wish we could do and tells Fallon where to go.
Then when you're done with that, watch the best nine minute musical duet your eyes will ever see.
