Oscar is forever. Even Oscar nominations. In a recent interview on the “20/20” (7 p.m. Saturday, ABC) special “Before they Were Stars” (repeating tonight), Gabourey Sidibe observed that her Best Actress nomination for “Precious” would follow her for the rest of her life and that no matter what she does, they can’t take that away from her.

Just what becomes of the formerly nominated performers whom Oscar has denied? In the case of Elliott Gould (nominated for “Bob & Carol & Ted & Alice” in 1969) and JoBeth Williams (nominated for the 1994 live-action short “On Hope”) — you appear in a Hallmark movie.

In “Uncorked” (8 p.m. Saturday, Hallmark), Gould and Williams play comfortably established parents and grandparents whose picturesque winery could use some financial aid. Unfortunately, their widower son (Scott Elrod) is just too darn busy as a world-renowned chef and all-around great dad. Fate intervenes when a gorgeous workaholic (Julie Benz) crosses his path at a convention. She would never leave her drippy, corporate-drone boyfriend for him, would she?

• One of the granddaddies of the reality TV/documentary form, “America’s Most Wanted” (8 p.m. Saturday, Fox) celebrates its 1,000th episode. Over the past 22 years, “Wanted” has helped capture more than 1,100 criminals and reunite 43 missing children with their families.

• At least one television tradition ends tonight with the final pre-Oscar “Barbara Walters Special” (6 p.m. Sunday, ABC), a fixture since 1981. This special will recall many of her past interviews with figures including Steven Spielberg, Halle Berry, President and Mrs. Reagan and Kim Basinger.

• Basinger’s ex-husband, Alec Baldwin, joins Steve Martin to host the 82nd Academy Awards (7:30 p.m. Sunday, ABC). This is never an easy job. Long after winners and losers go home, viewers still recall the success or failure of an Oscar show. And they never forget a failure or a fiasco. Rob Lowe will never live down dancing to “Proud Mary” with Mickey Mouse during the 1989 ceremonies. Years after the fact, David Letterman’s disastrous 1995 hosting stint still manages to provide punch-line fodder.

Baldwin and Martin are quick wits, and both are veterans of Hollywood and television. On the minus side, both men can exude a certain haughty manner and caustic disdain that may not wear well over three or four hours.

Some have anticipated and/or feared a fairly predictable evening of winners and losers. Mo’Nique is considered a lock to win for her supporting role in “Precious.” Who could have predicted this when she starred on the old UPN sitcom “The Parkers” from 1999 to 2004?

It’s interesting to note that Jamie Foxx, who starred on the WB’s “The Jamie Foxx Show” from 1996 to 2001, won a Best Actor Oscar for “Ray.” Neither UPN nor the WB, that were both folded into the CW network in 2006, were what you would call prestige networks. Their shows rarely got good reviews or received Emmy nominations, but now these graduates of the defunct networks have been recognized for serious performances.

So don’t be so quick to dismiss “Vampire Diaries” and “One Tree Hill” as so much teen fluff. You might be watching the Oscar nominees of tomorrow. It’s easy to forget that Morgan Freeman started on soaps and “The Electric Company” and that a certain “Bosom Buddies” star named Tom Hanks would win two Oscars.

Oscar die-hards can maintain their vigil with “Jimmy Kimmel Live: After the Academy Awards” (11:05 a.m. Sunday, ABC).

Today’s other highlights

• An extended brood rarely eats apart on “Parenthood” (7 p.m., NBC).

• Christiane Amanpour recalls international responses to genocide on the 2008 special “Scream Bloody Murder” (7 p.m., CNN).

• “Magic & Bird: A Courtship of Rivals” (7 p.m., HBO) recalls their hardwood glory days and mutual admiration.

• Celebrities interview one another on the “Oprah Winfrey Oscar Special” (8 p.m., ABC).

• Abbey continues her search for her son on “Survivors” (8 p.m., BBC America).

• Scheduled on “48 Hours Mystery” (9 p.m., CBS): A mysterious funeral-home drowning sparks concern.

Sunday’s other highlights

• Scheduled on “60 Minutes” (6 p.m., CBS): For the first time ever, two brothers rank among Spain’s top matadors.

• Miley can’t decide to stay or leave on “Hannah Montana” (6:30 p.m., Disney), first of a two-part episode concluding next Sunday.

• “Nick News with Linda Ellerbee” (7 p.m., Nickelodeon) looks at cheating in class.

• A cancer survivor fights to save Canadian wolves from extinction on “Running with Wolves” (7 p.m., Smithsonian).

• Martin Lawrence and Will Smith star in the 2003 blow-’em-up sequel “Bad Boys II” (7:30 p.m., NBC).

• The election comes down to the wire on “Big Love” (8 p.m., HBO).

• A TSOP legend ends up DOA on “Cold Case” (9 p.m., CBS).