Since it was Rock and Roll Hall of Fame week, a shirtless 64-year-old Iggy Pop was one of the performers last night.

Haley Reinhart and James Durbin tried to dance along with Iggy Pop when he came over and sang in between them, but it was hard to keep up with his energetic moves.

Jennifer Lopez looked a little frightened when Iggy Pop approached the judges table at the end of his performance and sang right in her face.