Welcome to Fox, Shirley MacLaine. The veteran actress debuts here on Glee.

Shirley MacLaine watches Blaine perform in this scene from Glee. Her character takes an interest in him.

Rachel is auditioning for a pilot in this scene from the Glee installment "Back-Up Plan." It ain't Broadway, but hey.

Blaine is being wined and dined by a New York socialite in this Glee scene. She's portrayed by Shirley MacLaine.

Mercedes is back on Glee! She tries to help Santana with a record deal in this scene.

Blaine and Kurt are rather adorable. They sing it up here on the Glee episode "Back-Up Plan."

Sing it, Kurt and Blaine! The pair perform here on the Glee episode "Back-Up Plan."