So, here's some info on the new SS Christmas special: 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. ONCE UPON A SESAME CHRISTMAS opens with the lyrical number “Holiday Lights,” a musical glimpse into the homes of Sesame Street families celebrating winter holidays, and unfolds into a fanciful bedtime story that brings the past alive. After a day of holiday fun, while being tucked into bed on Christmas Eve, Elmo asks, “Why do we leave cookies out for Santa?” As his father spins a tale about a dreary Sesame Street of yesteryear, a place so unfriendly not even Santa Claus would visit, viewers are transported to a period-perfect 19th-century city neighborhood, with characters in authentic hand-sewn costumes, but marked by unkindness and a serious lack of holiday spirit. Luckily, Elmo’s great-great-great-grandmonster moves into the neighborhood with the best of intentions and endless good will, gradually winning over the unhappy citizens and bringing kindness and cheer to Sesame Street once and for all. In addition to familiar Sesame Street denizens — Elmo, Grover, Big Bird, Bert, Ernie, Oscar the Grouch, Cookie Monster and The Count — ONCE UPON A SESAME CHRISTMAS features special guest appearances by Zosia Mamet (HBO’s “Girls”); six-time Tony Award winner Audra McDonald (HBO’s “Lady Day at Emerson’s Bar and Grill”); and Jim Gaffigan (“The Jim Gaffigan Show”). HBO Family playdates: Nov. 26 (6:00 p.m.) and 28 (8:00 a.m.), and Dec. 2 (8:00 a.m.) ONCE UPON A SESAME CHRISTMAS will also be available on HBO NOW, HBO GO, HBO On Demand and affiliate portals. Nonsubscribers will be able to sample the special for free during a two-week window, Dec. 12–26, via participating affiliates.