Sunday's Best Bets on TV

"Planet Earth" (8 p.m., Discovery Channel): It's billed as the ultimate portrait of our planet. Discovery Channel's "Planet Earth" is an 11-part series with the ultimate global view. Five years in the making, it boasts 200 locations with more than 70 camera operators having spent 2,000-plus days in the field to document nature's wonders. Among the series' countless never-before-filmed moments: a polar bear clambering from her snow-covered Arctic den, trailed into the dawn by her pair of cubs. Narrated by Sigourney Weaver, "Planet Earth" begins Sunday with three episodes:
"Pole to Pole," which follows the sun as it touches the lives of creatures across the planet, shedding light on how the world is interconnected.
"Mountains," which tours Earth's mightiest mountain ranges to meet the rare animals that inhabit them.
"Deep Ocean," which investigates the waters that cover two-thirds of the Earth's surface yet remain largely unrevealed.
Future episodes cover such habitats as jungles, caves and "Ice Worlds." Shot in high definition, the eye-popping "Planet Earth" airs weekly through April 22.
"Grease: You're the One That I Want" (8 p.m., NBC): Will theater buffs be hopelessly devoted to the new "Sandy" and "Danny"? After months of auditions and endless layers of cheese, "Grease: You're the One That I Want" finally chooses the two performers who will head a Broadway revival of the iconic musical. I've got chills and they're multiplying.
"Gene Simmons' Family Jewels" (9 p.m., A & amp;E): Gene gets a face-lift. It's like "Extreme Makeover" meets KISS.
"Battlestar Galactica" (10 p.m., Sci Fi): Holy frak, "Battlestar Galactica" is leaving us again! Yes, the series wraps up another compelling season with what producers are calling its "biggest cliffhanger ever." The episode kicks off with more action from Baltar's trial, and where it goes from there is anyone's guess. Better buckle up.
"Who Cares About Girls: Daughters Left Behind" (10 p.m., Oxygen): Intrepid reporter Lisa Ling shines a spotlight on how young women are treated like slaves in many countries around the world.