8 a.m., PBSMichelle Obama helps the Street-dwellers celebrate their 40th year on the air!
8 p.m., ABCElizabeth Mitchell) and Father Jack (Joel Gretsch).
9 p.m., CBSChris O'Donnell) that we saw in the season premiere.
9 p.m., CWColin Egglesfield) apartment for clues about Sydney's (Laura Leighton) death.
10 p.m., FXKatey Segal) has to put Jax (Charlie Hunnam) and Clay's (Ron Perlman) stalemate to an end.
11 p.m., COMEDYSerena Williams stops by. Perhaps to discuss her little U.S. Open outburst?
Also on the airwaves ...
NCIS, 8 p.m., CBS
So You Think You Can Dance, 8 p.m., FOX
The Biggest Loser, 8 p.m., NBC
90210, 8 p.m., CW
Dancing with the Stars, 9 p.m., ABC
The Good Wife, 10 p.m., CBS
The Hills, 10 p.m., MTV
The City, 10:30 p.m.,
What are you watching tonight?