As seen on DIY’s original series “Vanilla Ice Goes Amish,” Rob Van Winkle (Vanilla Ice) has breakfast with is Amish host John Schalabach (R) before they head out to do chores on his farm. (Michael F. McElroy/Getty Images)

Hallmark Channel saw success with its first original drama, “Cedar Cove,” so it is hoping for a similar outcome with backdoor pilot “Signed, Sealed, Delivered” (Hallmark at 9), which just got ordered to series. In this two-hour movie, Eric Mabius stars in a whimsical tale of post office workers trying to deliver misdirected mail.

You can’t pass up a show with a title like “Vanilla Ice Goes Amish” (DIY at 10). The pop star and renovation enthusiast travels to Amish country to learn more about hand craftsmanship.

Bruce Willis hosts “Saturday Night Live” (NBC at 11:30), with musical guest Katy Perry.

Sunday talk shows: “Platts Energy Week” (WUSA at 7:30 a.m.) interviews Distributed Sun’s Chase Weir, Dupont Photovoltaic Solutions’s Eric Romano and ConEdison Solutions’s Ian Diamond; “This Week in Defense News” (WUSA at 8) has former Defense Department industrial-base policy chief Brett B. Lambert, Gen. John E. Michel and CAE’s Marc Parent; “BioCentury This Week” (WUSA at 8:30) features American Action Forum’s Chris Holt, National Institutes of Health’s Ram Aiyar, Northwestern University’s Alicia Loeffler and Center for Advancing Innovation’s Rosemarie Truman; “Fox News Sunday” (Fox at 9) hosts Sens. Joe Manchin III (D-W.V.) and Bob Corker (R-Tenn.) and Rep. Jim Jordan (R-Ohio).

“White House Chronicle” (WETA at 9) has journalist Hedrick Smith; “State of the Union” (CNN at 9) features Sen. Rand Paul (R-Ky.) and former Gov. Brian Schweitzer (D-Mont.); “Newsmakers” (C-SPAN at 10) talks to Rep. Eliot L. Engel (D-N.Y.); “This Is America & the World” (WETA at 10 and WHUT at 6 p.m.) visits Astana, Kazakhstan; “Face the Nation” (CBS at 10:30) talks to Sens. John McCain (R-Ariz.), Charles E. Schumer (D-N.Y.) and Kelly Ayotte (R-N.H.).

Sunday night, “Access Hollywood” host Billy Bush takes a break from the red carpet to help fight illegal one-horned rhino poaching in Nepal on “Chasing Rhinos With Billy Bush” (National Geographic at 9).

Oh, look who it is — Nick Brody shows up for the first time this season on “Homeland” (Showtime at 9), and things are not looking good for the former Marine turned suspected terrorist.

It’s a big night for returning shows on AMC, starting with the Season 4 return of “The Walking Dead” (at 10), followed by “Comic Book Men” (at midnight), set at Kevin Smith’s comic book shop in New Jersey, coming back for Season 3.

— Emily Yahr