"Gangnam Style" singer Psy made a surprise appearance as a special guest on NBC's "The Ellen Show" on Monday, teaching both host Ellen Degeneres and pop diva Britney Spears his much-mimicked "horse riding" dance.

Spears had earlier expressed interest in learning the dance on her Twitter account.

The rapper will appear on the talk show again next week as one of the regular guests, when he will have an opportunity to talk more about himself and his future plans.