Highlights on cable channels for tonight include the following:
7 p.m. — “The Marine.” A recently discharged Marine chases diamond thieves who have his wife. John Cena, Robert Patrick. AMC
7:30 p.m. — “Unstoppable.” A conductor and a veteran engineer race against the clock to stop an unmanned freight train before it reaches a city and causes a catastrophe. Denzel Washington, Chris Pine. FX
8 p.m. — “V for Vendetta.” In a futuristic Britain, a mysterious man plots an explosive revolution that will demolish parliament and overthrow the corrupt government. Natalie Portman, Hugo Weaving. Syfy
8:30 p.m. — “He’s Just Not That Into You.” Several young women and men, from committed relationships and singles, try to understand the signals and the intentions of the other sex. Ginnifer Goodwin, Jennifer Connelly. E!