"Good Morning America" (7 a.m., WLS-Channel 7): Jennifer Hudson performs on Diane Sawyer's last show.

"Yes, Virginia" (7 p.m., WBBM-Channel 2): How can you be sure that Santa Claus is real? You ask a newspaper, of course. With the voices of Neil Patrick Harris, Jennifer Love Hewitt and Alfred Molina.

"Phineas and Ferb Christmas Vacation" (7 p.m., Disney): The oddly-shaped brothers try to spread holiday cheer throughout Danville, but Doofenshmirtz's Naughty-inator may stymie their efforts. Afterward, Selena Gomez and the Scene debut the music video for the new song "Naturally."

"Great Performances: Andrea Bocelli & David Foster" (7:30 p.m., WTTW-Channel 11): With Mary J. Blige, Natalie Cole, Reba McEntire, the Mormoan Tabernacle Choir and the requisite Muppets.

"Ugly Betty" (8 p.m., WLS-Channel 7): The fabudrama has been on fire lately, with fake deaths, exotic locations, and cheap shots at Anne Heche. See for yourself.