Sing and dance along with Barney and the gang as they count down their 20 favorite songs! What tune will claim the No. 1 spot? Will it be Barney's famed anthem "I Love You" or that old mathematical-footwear favorite "One, Two, Buckle My Shoe"? Other contenders include "Good Manners," "The Elephant Song," "The Doctor Is a Friend of Mine," "If I Lived Under the Sea" and "Mr. Knickerbocker."