Overview:C is for Celebrate! Join host Joseph Gordon-Levitt and the residents of Sesame Street - human and monsters alike - to celebrate 50 years of learning, laughter, and love. Familiar felt faces like Roosevelt Franklin, Don Music, Sherlock Hemlock, and the Amazing Mumford join celebrity guests Norah Jones, Nile Rodgers, Sterling K. Brown, Meghan Trainor, Patti LaBelle, and Elvis Costello in this heartwarming special.