06/17/2011 10:42 am ET | Updated Aug 17, 2011

Gwyneth Paltrow Joins 'Glee' Tour, Performs 'Forget You' With Cast

When the 'Glee' tour made it's stop in East Rutherford, NJ last night the audience got treated to more than just the singing and dancing students of McKinley High. Everyone's favorite substitute was also in the building.

Gwyneth Paltrow, who plays reoccurring character Holly Holiday, joined the cast to perform her breakout song on the show, Cee-lo's 'Forget You.' Paltrow hinted before the tour started that she'd be doing "a few surprise things" with the tour, which filmed for it's upcoming 3D movie version of the show last night.