'Glee' Stars Stayed Up All Night For 'Thriller' Cover

'It was probably one of the most physical numbers that we've ever done,' Cory Monteith says.

When "Glee" returns from hiatus in the high-profile post-Super Bowl slot, it's returning in a big way, covering [artist id="1102"]Michael Jackson[/artist]'s "Thriller." On Tuesday, the cast spoke to "Access Hollywood" about remaking the iconic tune, which will reportedly be mashed up with another yet-to-be-revealed hit.

"It was a huge production. We we're shooting that until 6:30 in the morning," Cory Monteith told "AH" at the Television Critics Association press tour. "We shot all night, and it was probably one of the most physical numbers that we've ever done. I was lifting Naya Rivera at one point in the dance. It was really active. We had the whole USC band wrapped in to this number as you can see in the photos. It was awesome."

Photos of the cast filming "Thriller" surfaced on the Internet recently, depicting a prom night-turned-zombie affair. Jackson's tune is just one of the many hits to be covered in the broadcast. Other songs featured in the post-Super Bowl episode include hits by the Black Eyed Peas, Katy Perry and Lady Antebellum.

Kevin McHale revealed that Jackson is his "favorite artist ever" and that he has been continuously requesting to cover a tune by the late King of Pop. "I've been pushing very obnoxiously for a very, very long time, so I'm beyond thrilled that we do Michael Jackson," said the actor.

Like the iconic music video, the "Glee" cover was an extravagant production, which was fitting for star Dianna Agron, who couldn't help smile throughout filming.

"The whole night, everybody kept saying, 'Why are you laughing so much? Why are you smiling so much?' " she said. "I was just in my element. I was in huge makeup, huge hair, huge costume, the stuff that I loved the most, which is why I loved 'Rocky [Horror Picture Show]' so much."

Matthew Morrison isn't in the number, but he watched it being shot. "We actually shot it, like, a couple nights ago," Morrison told "AH." "I actually went out to see it. We shot it in Long Beach and at a high school that we used their football field at. It was stunning. It's so weird with this show. We keep outdoing ourselves. It's like, 'What is there left to do?' This number is just fantastic."

What other MJ songs do you want the "Glee" cast to tackle? Share your ideas in the comments!