Survivor: Blood vs. Water
As the battle between former players and their loved ones comes to a conclusion, this season's Sole Survivor is crowned in the season finale. Following the big reveal, Jeff Probst hosts a live reunion show during which the players talk about the season. CBS/Global, 7 p.m.
After the nuclear power plant springs a leak, it snows in Springfield and the town is inundated with holiday revellers in this new episode. As shopping prices skyrocket because of the tourists, Marge opens the Simpson house to boarders. Fox, 7 p.m./Global, 11 p.m.
Penguins: Waddle All the Way
Renowned wildlife filmmaker John Downer explores the secret world of penguins in this new special. Cutting-edge spycams offer viewers an unparalleled look into the lives of three species of penguin: Emperor, Rockhopper and Humboldt. Discovery, 7 p.m.
Once Upon a Time
Don't miss the mid-season finale of this fantasy series, which immerses viewers in a land populated by famous fairy-tale characters. The new episode Going Home finds the residents of Storybrooke scrambling to stop pan from placing another curse on their town. ABC/CTV, 7 p.m.