12:30 p.m. ET, NBC, Men's Cycling: Take in the sights of China as the cyclists take to the road.
2:30 p.m. ET, NBC, Swimming: Some guy named Michael Phelps is swimming preliminary heats. I've heard that he's good.
5:00 p.m. ET, CNBC, Boxing: Elimination bouts start for men's boxing. Elimination takes on a much more ominous tone when boxing is involved.