Dancing With Your DVR: What To Watch Tonight

Samantha Who: (ABC, 9:30 PM) In tonight’s season premiere, recovering amnesiac Sam (Christina Applegate) starts to warm to the idea of moving back in to her apartment with ex Todd (Barry Watson). Only problem? Todd would rather cohabitate with new girlfriend Chloe (Kiele Sanchez). When the co-op board frowns on Sam’s new subletter, she’s forced to move in with the couple to avoid eviction, which makes for some rather memorable moments.

Medium: (NBC, 10 PM) Yet another Arquette sibling comes on board as tonight Patricia’s sis Roseanna is desperately seeking salvation when she’s suspected of murdering two young lovers.

The Hills: (MTV, 10 PM) Lauren just wants a drama-free birthday. Yeah right!

The Bachelor: London Calling: (ABC, 10 PM) Not everything is coming up roses as three unlucky hopefuls get the boot.

High School Confidential: (WE, 10 PM) Too bad 15-year-old Chrystle’s parents feel just fine about leaving her alone at home for months at a time, because Chrystle herself doesn’t feel too great about it.