First Look! T.R. Knight as a Villain on Law & Order: SVU 1 of 4 Prev Autoplay Next Share Tweet August 4, 2011 by Rebecca Martin Related: Grey's Anatomy, TV Stars, T.R. Knight full size Credit: Doug Meszler/Splash New T.R. Knight on Law & Order: SVU T.R. Knight played sweetie-pie George O'Malley on Grey's Anatomy, but now he's returning to TV in a much creepier role. Get a first look at T.R. as a serial rapist on Law & Order: SVU.