Holiday High School Reunion (8pm, Lifetime) - A movie in which a struggling fashion designer returns home during Christmas and attends her high school reunion, where she dreams of reuniting with a guy she let get away.
Matchmaker Santa (8pm, Hallmark) - A bakery owner (Lacey Chabert) who hopes to whip up a holiday engagement with her busy boyfriend (Thad Luckinbill) finds an unexpected new love when a mysterious mall Santa doubles as a meddling cupid. Also stars Florence Henderson, John Ratzenberger and Adam Mayfield.
Wedding Band (10pm, TVS) - A beautiful sci-fi star (Megan Fox) is drawn to Tommy (Brian Austin Green) when his band plays at a Comic-Con event. Elsewhere, two geeky high school boys try to hire the band to perform at a party.
Fatal Vows (10pm, Investigation Discovery) - A new true crime series chronicling divorces that turned deadly begins with a look at a retired Navy commander in Virginia who had a seemingly idyllic relationship with his wife. Each episode features the insights of Brian Russell, an attorney who is also a forensic and clinical psychologist, and Stacy Kaiser, a licensed psychotherapist and relationship expert.
Saturday Night Live (11:29, NBC) - Jeremy Renner is the host, and Maroon 5 is the musical guest. (Hoping for at least one sketch with Adam Levine, preferably in a creepy "American Horror Story" sketch.)
Austin City Limits (Midnight, UNC-TV) - Tonight's episode is a rerun, but it's a good one. Mumford and Sons perform from their 2009 album "Sigh No More."