Fox won the night with House (5.2) and 24 (3.4). 24 was down a bit, but that shouldn't matter much.
ABC was second with The Bachelor (3.9) and Castle (3.0). Castle reached a series high which is awesome since it was in danger at the beginning of the season.
CBS was third with repeats of How I Met Your Mother (2.1), Accidentally on Purpose (1.9), Two and a Half Men (3.8), The Big Bang Theory (4.0), and CSI: Miami (2.6). I have no clue how the later two comedies repeat so high but they do. This also marks the first time CSI: Miami lost to Castle though it was repeat.
NBC was last with Chuck (2.5), Heroes (1.9), and The Jay Leno Show (1.2). Chuck is stable so it's looking good for now. On the other hand there's Heroes, which improved slightly but is still doing terrible. I'm still predicting that it won't come back. The ratings suck, the show is expensive, and it has no hope of gaining new viewers.