PENGUINS: WADDLE ALL THE WAY: From filmmaker John Downer, a new documentary about the mysterious lives of penguins. (Frederique Olivier/Discovery Channel/BBC)

From award-winning filmmaker John Downer, “Penguins: Waddle All the Way” (Discovery at 9 p.m.) dedicates two hours to exploring the secrets of the elusive world of penguins. The film, which uses specially designed equipment, such as penguin “spy” cameras, gives viewers unprecedented access to these feisty and adorable birds.

SERIES PREMIERE: The newest British import, “Atlantis” (BBC America at 9), is a fantasy ad­ven­ture series set in a time of legendary heroes and mythical creatures in the lost city of Atlantis. Cast members include Mark Addy, Jemima Rooper and Juliet Stevenson.

If you loved “Sharknado” and/or hate yourself, “Stonados” (Syfy at 9) could be your Saturday night delight — it’s in the same ridiculous vein, but instead of sharks causing absolute mayhem, rocks do. Boring, inanimate rocks.

Josh Hutcherson is host and the band Haim is the musical guest for this week’s “Saturday Night Live” (NBC at 11:30).

Sunday talk shows: “Platts Energy Week” (WUSA at 7:30 a.m.) interviews Amina Benkhadra of the National Office of Hydrocarbons & Mines; “This Week in Defense News” (WUSA at 8) has Military Times GearScout’s Rob Curtis; “BioCentury This Week” (WUSA at 8:30) features Food & Drug Administration’s Margaret A. Hamburg; “Fox News Sunday” (Fox at 9) hosts former governor Sarah Palin (R-Alaska) and Sen. Bob Corker (R-Tenn.); “White House Chronicle” (WETA at 9) has WBZ NewsRadio 1030’s Joe Mathieu and the Providence Journal’s Edward Achorn; “State of the Union” (CNN at 9) features Reps. Edward R. Royce (R-Calif.) and Eliot L. Engel (D-N.Y.).

“Government Matters” (WJLA at 9:30) hosts Hunch Analytics’s Aneesh Chopra and Rep. Mac Thornberry (R-Tex.); “Newsmakers” (C-SPAN at 10) talks to Thornberry; “This Is America and the World” (WETA at 10 and WHUT at 6 p.m.) talks to Philippine Ambassador Jose L. Cuisia Jr.; “Face the Nation” (CBS at 10:30) talks to Clinton J. Hill, lead Secret Service agent to Jacqueline Kennedy in 1963, and Rep. Steny H. Hoyer (D-Md.).

Sunday night, the “2013 American Music Awards” (ABC at 8 p.m.) are live with rapper Pitbull as host. Christina Aguilera, Ariana Grande, Miley Cyrus, Imagine Dragons and more of the other hottest acts in music are expected to perform.

SERIES PREMIERE: The latest comedy from Chris Lilley, “Ja’mie: Private School Girl” (HBO at 10:30), follows the eponymous school captain during the last few months of her final year of school, far removed from the grounds of Summer Heights High and back on the lush manicured lawns of Hillford Girls Grammar School.

Rachel Lubitz