T.R. Knight has officially bid farewell to Grey's Anatomy after a tumultuous final season and a gripping finale. We wish him all the best and thank him for all his good work!

Grey's Anatomy star T.R. Knight is said to have asked for his release from the show. We will see if that request is granted.

Chambers, Heigl and Knight enjoying each other's company.

T.R. Knight and Mark Cornelsen are a sweet couple. At least in our opinion.

... Of the Grey's Anatomy cast.

T.R. Knight with his boyfriend Mark Cornelsen in June 2008. We're happy that T.R. has found a nice guy like Mark and that they can do as they please in California regarding marriage - when and if they get to that stage, of course.

T.R. Knight has scored another Broadway role in the wake of his departure from Grey's Anatomy. We wish him nothing but the best!

T.R. Knight and boyfriend Mark Cornelsen are content just hanging out. And we think they make a cute couple.

T.R. Knight and Mark Cornelsen recently started dating and went public at the 2008 Elton John AIDS Foundation Oscar Party. They make a cute and happy couple!

T.R. Knight, along with his co-star Sara Ramirez and their former co-star Kate Walsh, recently filmed PSAs for GLAAD. Good for these three!

Knight looking downright scary.

Katherine Heigl, T.R. Knight and Katherine's mother Nancy Heigl in Paris, France, in February 2008. So cute how they remain such good friends off the set.