Plot: Performed on Sondheim's 80th birthday in March 2010, Great Performances presents the New York Philharmonic's salute to a true Broadway legend on November 24. Hosted by David Hyde Pierce, gathering to celebrate are acclaimed Sondheim alumni as Laura Benanti, Michael Cerveris, Victoria Clark, Joanna Gleason, Nathan Gunn, Patti LuPone, Marin Mazzie, Audra McDonald, Bernadette Peters, and many more