Summer Olympics: NBC (Ch. 5) has coverage from 9 a.m.-5 p.m., 7-11 p.m. and 11:35 p.m.-1 a.m.; MSNBC from 7 a.m.-3 p.m. and 3 a.m.-7 a.m.; CNBC from 3-6 p.m. and 10 p.m.-2:30 a.m.; USA from 7-10 a.m. and midnight to 7 a.m.; and Oxygen from 7-9 p.m.

Terminator: The Sarah Connor Chronicles (8 p.m., Ch. 13): Sarah tries to figure out who will create Skynet. (R)

P.O.V. (9 p.m., Ch. 7): A performance artist in Belarus mocks that country's autocratic president.

Wide Angle (11 p.m., Ch. 7): China Prep profiles four Chinese students who are among 1,800 teens competing for 59 spots at top universities.