Thomas Dekker and Summer Glau in Terminator: The Sarah Connor Chronicles by Richard Foreman/Fox Thomas Dekker and Summer Glau in Terminator: The Sarah Connor Chronicles by Richard Foreman/Fox

Monday's ratings highlights:

8 pm/ET
Dance War won the hour with 10.33 million total viewers, edging out Gladiators (10.15 mil, but an easy No. 1 in demos). Prison Break returned to 7.9 mil, a 700K increase from its last airing.

9 pm
Deal or No Deal dominated with 15 million viewers, and was tops in demos. Sarah Connor Chronicles (10.07 mil) shed 45 percent of its Sunday premiere audience, and in its first half-hour placed fourth (behind Deal and Dance War). But come 9:30, TSCC was No. 2, beating Rules and a new Underbelly.

10 pm
CSI: Miami (14.7 mil) surged 770K from its last fresh eppy, while Medium (9.5 mil) and October Road (4.9 mil) showed little movement.