Jim Parsons, known for his uber nerd persona Sheldon Cooper on The Big Bang Theory took to the stage to work the wildly sucessful cult classic Rocky Horror Picture Show. Showing off some leg and a lot of attitude Parsons seems to completely transform in front of thee audience. Here’s more:

Parsons, who nabbed Emmy Awards in 2010 and 2011 for his turn as the geeky Sheldon Cooper on “Theory,” played the role of Dr. Frank-N-Furter from “The Rocky Horror Picture Show” at the 21st annual “A Night at Sardi’s” event in Hollywood. Proceeds from the event reportedly benefitted the Alzheimer’s Association, according to Just Jared.

Joining Parsons onstage for the performance were co-stars Kaley Cuoco, Mayim Bialik and Johnny Galecki, as well as “Wings” actor Steven Weber.

Parsons’ sexuality was confirmed in a New York Times article last year. Of the 39-year-old actor, who was then starring on Broadway in a revival of “Harvey,” writer Patrick Healy noted, “Mr. Parsons is gay and in a 10-year relationship.”