Despite assistance from Chuck and Life, Heroes continued on its downward spiral. Meanwhile, ABC - last night’s most-watched network - narrowly lost in the demos to CBS.

8pm

• Dancing with the Stars (18.9 million, 4.4/11 in 18-49) slipped by 1.2 million.
• The Big Bang Theory (8.7 million, 3.3/9) lost 700,000; How I Met Your Mother (8.8 million, 3.7/9) was off by 900,000.
• The debut of Chuck (6.6 million, 2.6/7) was down 27% from its last premiere.
• Terminator: The Sarah Connor Chronicles (5.4 million, 2.0/5) chased away 400,000.
• Gossip Girl (3.5 million, 1.9/5) was up a notch.

9pm

• Two and a Half Men (13.8 million, 4.7/11 in 18-49) had the night’s best demos.
• Heroes (9.34 million, 4.5/10) sliced off 600,00 and hit a new low.
• Worst Week (9.3 million, 3.1/7) had a 1.7 million dive.
• Prison Break (5.3 million, 2.0/5) saw 600,000 escape.
• One Tree Hill (3.4 million, 1.9/4) actually improved by 300,000.

10pm

• CSI: Miami (14.3 million, 4.4/11 in 18-49) took a 2.6 million hit.
• Boston Legal (9.8 million, 2.3/6) picked up 400,000.
• Life (2.7/7) returned to 6.9 million.

*denotes repeat

(You can review last Monday’s ratings here.)