SESAME STREET has been educating and entertaining kids, helping them grow smarter, stronger and kinder, for more than four decades. Now, just in time for the holiday season, the fun-filled extended special ONCE UPON A SESAME CHRISTMAS debuts FRIDAY, NOV. 25 (7:00-8:00 p.m. ET/PT), while the new season of SESAME STREET launches SATURDAY, JAN. 7 (9:00-9:30 a.m. ET/PT), on HBO.