'Glee': 'What A Feeling' Cover In 'Nationals'

It's that time of year! "Glee" is heading to Nationals again, and they've got a "feeling." In the video below, New Directions -- particularly Tina (Jenna Ushkowitz) and Rachel (Lea Michele) -- cover the "Flashdance" classic "What A Feeling."

Other songs from Nationals include Lady Gaga's "Edge of Glory," Celine Dion's "It's All Coming Back to Me Now" and Meat Loaf's "Paradise by the Dashboard Light."

In the first hour of "Glee's" two-hour Tues., May 15 episode, Tina suffers a head injury and imagines the "Glee" kids in different roles. What if Puck was Blaine or Will was Sue?

Meanwhile, Lindsay Lohan, Perez Hilton and Rex Lee guest star in the second hour of "Props/Nationals."

Check out the full "What A Feeling" performance below and click through the slideshow to see stills from the new episode.