Jim Parsons with guest-star Christine Baranski, <I>The Big Bang Theory</i> Jim Parsons with guest-star Christine Baranski, The Big Bang Theory

Monday's ratings recap:

8 pm/ET
President Barack Obama's first prime-time news conference was watched by 37 million viewers across the Big Four networks. The only odd part: When Thirteen showed up to discuss national health care.

9 pm
CBS comedies dominated, with Two and a Half Men leading the way with 14.88 million viewers. Playing the role of lead-out this week, The Big Bang Theory enjoyed a new all-time high of 13.1 million.

 The Bachelor (averaging 10.88 mil from 9 to 11 pm) placed second, with 24 (10.5 mil, down 800K) following close behind. Heroes (7.9 mil) dropped 560 thou from the "Fugitives" premiere.

10 pm
CSI: Miami copped the top spot with 13.7 million viewers (down 14 percent week-to-week). Losing out to the second hour of the Bach', Medium (7.93 mil) slipped 600K.