Republican Convention: Like the convention itself, TV coverage is in flux. If the GOP's schedule returns to normal, the cable networks — CNN, C-SPAN, FNC, MSNBC — will provide coverage pretty much all day long. In prime time, PBS (Ch. 7) will be on from 7-10 p.m.; ABC (Ch. 4), CBS (Ch. 2) and NBC (Ch. 5) all plan an hour at 8 p.m.

America's Got Talent (7 and 9 p.m., Ch. 5): Two more hours of auditions (split in half by convention coverage).

House (7 p.m., Ch. 13): May's two-hour season finale is repeated.

Big Brother (9 p.m., Ch. 2): The veto meeting and competition are held.

The Shield (11 p.m., FX): As the final season begins, Vic is still in danger of losing his badge, and his family is threatened by the Armenian mob.