The perks of being a Gleek! On Sunday afternoon before the Academy Awards, "Glee" star Darren Criss got to sing with one of the biggest movie stars ever: Kermit the Frog!

The song "Man Or Muppet" from "The Muppets" was nominated for an Academy Award, but because there were no plans for a performance during the actual awards ceremony (bummer!) Kermit decided to do some singing before the show.

Criss and Kermit opted to perform the classic "Rainbow Connection," which is always quite a crowd-pleaser. They sang together at the Hollywood Roosevelt hotel, down the street from the awards, and E! caught the whole thing on camera. What did you think of their duet?