It's paid tribute to Britney Spears and tackled the difficult topic of religion.
On October 26, meanwhile, Glee will take on The Rocky Horror Picture Show.
"I've loved Rocky Horror since I first saw it when I was 12," says Chris Colfer told TV Guide of the 1975 movie. "There is no point to it except being crazy and having a good time."
That's exactly what Colfer, John Stamos and Chord Overstreet appear to be doing in these photos. Click on each and go behind the scenes on this episode now: