"I'm in Love with U" is a Sesame Street spoof of the song "Indian Love Call", from the operetta Rose-Marie, performed by two Anything Muppets: Jeanette (a Green Anything Muppet) and Nelson (an Orange Gold Anything Muppet officer of the Royal Canadian Mounted Police). The duet sing about many words beginning with the letter, until the "U" at the end gives its own U word: Unbelievable!