During the last episode of the Late Night Show with Jimmy Fallon, the host, Joseph Gordon-Levitt and Stephen Merchant engaged in an epic lip sync-off battle.
A lip sync-off, as explained by Fallon, is a competition in which the contestants lip sync a section of a famous song and try to be better than the other guy.
We won't tell you which songs these three have chosen: let's just say that the 10-minute clip is filled with ageless hits and sprinkled with surprises. One of the comments on YouTube is a testament to how much fun this is: "I think the show should just be this for an hour," it says.
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Check out the video above and tell us, in the comments, who you consider to be the best lip sync artist!
Image: Late Night, YouTube