Ratings: Milestones for Mother, Miami and Greek

Monday's numbers at a glance:
8 pm/ET
Dancing with the Stars averaged 20.3 million total viewers across its two-hour run, down 600K week-to-week. After Big Bang Theory (8.63 mil) enjoyed a 480 thou boost, How I Met Your Mother (10.6 mil) surged 900K to spear its best demos ever and its biggest audience of the season. A House repeat delivered two mil more than time-slot predecessor Canterbury's Law.
9 pm
CBS' Men (14.25 mil) gained 200K, but Old Christine (9.87 mil) took a 1.6 mil hit. New Amsterdam (6.28 mil) shed another mil. Girlicious matched last week's 1.55 mil.
10 pm
CSI: Miami scored 15.8 mil, a 1.1 mil increase from its last fresh episode and its second-largest audience of the season. Medium (8.8 mil, down 1.1 mil) edged out The Bachelor (eight mil).
Greek, meanwhile, had some record ratings of it's own on Monday, even without Britney as a guest. The ABC Family episode set a network record for the best-rated original series telecast in key demos, hitting a series high with 1.4 million total viewers. The premiere spring was also basic cable's most-watched program in its time period (8-9 pm/ET) among target demos.