David Caruso, CSI: Miami David Caruso, CSI: Miami

Monday's ratings recap:

8 pm/ET
Entering its penultimate week, Dancing with the Stars averaged 19.73 million total viewers over its 90-minute run. Combining for second place, CBS' Big Bang Theory (9.7 mil) dropped 300K from last week's series high, while How I Met Your Mother scored a season-high 9.84 mil.

At 6.8 mil, Chuck was up nine percent, while Terminator tacked on 120 thou to hit 5.3 mil. Gossip Girl dipped 112K to hit a new series low of 2.88 mil.

9 pm
Two and a Half Men delivered a season's best 15.23 million, while lead-out Worst Week (10.37 mil) gained 650K. Samantha Who? (11.12 mil) was up a hair. Heroes slipped 240K to redefine its series low: 7.59 mil. It was followed by Prison Break (5.89 mil, up nine percent) and Tree Hill (2.73 mil, a measly audience in any era).

10 pm
CSI: Miami marked 150 episodes by surging 13 percent week-to-week to hit 15.39 million, its largest audience since the season opener. Boston Legal dropped 370K, to 8.43 mil, while the recently cancelled Worst Enemy spied a new worst: 3.99 mil.