TONIGHT'S MUST-SEE

"Medium," 9 p.m., NBC. The Angelica Huston episodes wrap up, quietly packing deep emotional power. Last week, Allison's dreams showed the daughter of Cynthia Keener (Anjelica Huston) being killed 10 years ago. Nothing about the dream — the male and female conspirators or the address — seemed to click. But now there's a new case — different guy, different place, but the same female villain Allison dreamed about. Stick with this one; it makes an impact.

"The New Adventures of Old Christine," 8:30 p.m., CBS. This above-average comedy wraps its midseason run. Christine thinks she has the flu. Her doctor (Jason Alexander) feels she might be starting the years leading up to menopause; this doesn't please her.

"Dancing With the Stars," 7 p.m., ABC. The third week starts, with Penn Jillette and Monica Seles gone.

"Two and a Half Men," 8 p.m., CBS. Alan is dating his ex-wife's friend.

"Retirement Revolution," 10 p.m., PBS. The first half of a documentary, this views the past and future of retirement. It's often bland and unspecific but occasionally makes good points.

"High School Confidential," 7 p.m., WE. We rarely see the lives of teen overachievers. This takes an involving, four-year look at three of them.