The singer joined in on a wonderful rendition of 'I Wish It Was Christmas Today.'
The reality star revealed how nasty comments from viewers prompted him to turn his life around.
The finale for season 15 airs Tuesday, Dec. 18, on NBC.
ET was on set of the special 'Odd Couple' episode Cindy Williams and Penny taped to honor her brother Garry Marshall.
ET takes a look at some of the biggest moments from Ellen DeGeneres' just-released Netflix special.
ET exclusively debuts the first trailer for the upcoming original movie.
Watch Marcia Gay Harden in Lifetime's Creepy 'Love You to Death' Promo (Exclusive)
Francia Raisa on 'Bring It On' Reunion With Rihanna and Solange
MTV recently debuted its 'Teen Mom 2' season nine trailer, which addresses Jenelle Evans' alarming hospitalization in October.
ET caught up with the stars of the hit Netflix show, Nicole Byer and Jacques Torres, at the 'Nailed It' Holiday event in Hollywood.
The 'All American' actor is on set to demonstrate his mad rhyming skills.
The beloved talk show host's new Netflix special is jam-packed with moving and hilarious moments.
'Game of Thrones' standout Aidan Gillen, to-die-for costumes and UFOs -- what's not to love?
The docu-series, which follows the lives of teen drag queens, is a Snapchat Original. New episodes drop daily.
