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Jimmy Fallon's Best Musical Moments of 2012 (VIDEO)

12/26/2012 10:43 am ET | Updated Feb 22, 2013

"Late Night" host Jimmy Fallon donned some tight pants with Will Ferrell, slow-jammed the news with the President and shook his tambourine with Carly Rae Jepsen -- and those are just a few of his best musical moments this year.

We've compiled our top 10 favorite Fallon sing-alongs of 2012 for a year-end best-of list below.

Jimmy Fallon's Best Musical Moments Of 2012