Glee' alums Lea Michele and Dianna Agron watched costar Darren Criss perform on Broadway. Michele joked that they were her high school classmates.

Dianna Agron and Lea Michele attend the premiere of Fox's "Glee" at Willows Community School on September 8, 2009 in Culver City, California. (Photo by Noel Vasquez/Getty Images) ...