Adam Lambert's Incredible Cher Impression in 'The Muffin Man' Performance.
Adam Lambert sang "The Muffin Man" in the style of Cher on Jimmy Fallon's "That's My Jam" show. The former "American Idol" contestant had previously sung Cher's "Believe" in front of the pop icon herself. Lambert's most recent album, "High Drama," features 11 classic songs from music powerhouses reimagined in his own music style.