On tonight's Late Night—the show's second anniversary—Jimmy Fallon was busy! Not only did Fallon slow-jam the news with Brian Williams, but he also impersonated Charlie Sheen—brilliantly, to boot—in this ad for Sheen's new fragrance, "Winning." Tiger blood!

Also Tonight: Watch Brian Williams Slow-Jam the News with Jimmy Fallon

[Late Night with Jimmy Fallon]