1) “TLC Forever,” 8-10:33 p.m., Lifetime, rerunning at midnight. Mixing pop, rap and R&B, the TLC trio (shown here) soared. It had nine top-10 hits (four at No. 1) and sold 65 million records. Lifetime made a scripted movie (“Crazysexycool: The TLC Story”) that it’s rerunning at 5:30; now at adds this documentary, in a 12-hour marathon. At 4 p.m., 10:33 p.m. and 2:39 a.m., is a rerun about the relationship of TLC’s Lisa “Left Eye” Lopes and football star Andre Rison.
2) “NCIS: Hawaii,” 8 p.m., CBS. When a Marine’s body is found in a junk yard, the team investigates the world of illegal street racing. Also in this rerun, Tennant worries that her son is keeping a secret. Kate Whistler frets about introducing Lucy, her girlfriend, to colleagues.
3) More reruns. It’s fun-and-games time. ABC has three straight reruns of “America’s Funniest Home Videos.” NBC counters with reruns of “The Wall” at 8 p.m., “The Weakest Link” at 9 and a fun “Password” (with Martin Short and Jimmy Fallon) at 10, plus “Saturday Night Live at 11:29.
4) “Murdoch Mysteries,” 7 and 8 p.m. ET, Ovation. Last week, this pleasant Canadian drama left us in an unpleasant place: Dr. Julia Ogden (Helene Joy) tried to help the abused wife of a crooked politician … then was arrested for her murder. Now Julia’s husband, Inspector Murdoch, scrambles to exonerate her, helped by his colleagues. It’s a good hour, setting up a rarity for “Murdoch” in the second hour – a closed mystery, with only a handful of suspects.
5) Movie: Three terrific ‘80s movies show up tonight with their sequels. It’s “Back to the Future” (1985) at 7:30 p.m. on AMC, with sequel (1989) at 10 … “Beverly Hills Cop” (1984) at 5:30 p.m. on CMT, with sequels at 8 (1987) and 10:30 (1994) … and “Ghostbusters” (1984) and sequel (1989) twice on Sundance – at 12:45 and 3:15 p.m. and 7:45 and 10:15 p.m.