Watch: Mariah Carey, Jimmy Fallon and The Roots Perform "All I Want For Christmas Is You"

Who doesn't live for Mariah Carey's yuletide cuffer "All I Want For Christmas Is You" come December?

Now the high-note hitter teams up with late night funny man Jimmy Fallon, the Roots and some adorable youngsters for a fun take on the holiday ballad. Watch the special Late Night "Music Room" version below.