Saturday night, “Louis C.K.: Oh My God” (HBO at 10) features the comic debuting all new material at a show in Phoenix.

New docu-series “Life With La Toya” (OWN at 10:30) follows La Toya Jackson — described as the “wild card” of her famous musical family — as she strikes out on her own.

Vince Vaughn hosts “Saturday Night Live” (NBC at 11:30) with musical guest Miguel.

Sunday night, six-part docu-series “The 80s: The Decade That Made Us” (National Geographic at 8), narrated by Rob Lowe, looks at the trends and culture of the decade.

Season 2 of “Veep” (HBO at 10) kicks off with VP Selina Meyer (Julia Louis-Dreyfus) in high spirits after some successful campaign appearances.

Reality series “I Love Jenni” (mun2 at 9) — which featured Jenni Rivera’s family — will continue in the wake of Rivera’s death, with footage of the singer in the weeks before she died in a December plane crash.

Rebel Wilson hosts the “2013 MTV Movie Awards” (MTV at 9) live from Los Angeles.

On Showtime, “Nurse Jackie” (at 9) and “The Borgias” (at 10) debut new seasons.

— Emily Yahr