Eric Dane, Patrick Dempsey and Chyler Leigh, Grey's Anatomy Eric Dane, Patrick Dempsey and Chyler Leigh, Grey's Anatomy

8 pm/ET FOX
Back in 2006, when Brennan and Hodgins barely escaped a live burial courtesy of the Grave Digger, it almost gave new meaning to the term boneyard. Well, tonight's case is unearthed, so to speak, after evidence from the case goes missing, and the aforementioned near-victims are questioned by the courts. Now, one can expect the Jeffersonian team to abide by the law, but a judge will just have to wait when they learn that one of their own — Booth — could be the sepulchral serial killer's next victim. —Joe Friedrich

Grey's Anatomy
9 pm/ET ABC
Is Denny really dead? Only the producers knows for sure, but he did go "poof!" two weeks ago and Jeffrey Dean Morgan isn't in the guest cast tonight, when Derek will try to screw up the courage (if that's the word for it) to propose to Meredith. Another romantic development involves Lexie and Sloan, a broken man if ever there was one. And in medical news — this is a doctor show, remember — cardiothoracic surgeon Virginia Dixon (Mary McDonnell) returns with advice for Bailey. —Paul Droesch

30 Rock
9:31 pm/ET NBC
The recently renewed show-within-a-show rose to award prominence this year, scoring heavily at the SAG and Golden Globe galas. Tonight, the show's characters hope to score just as well. Liz has fluttering eyes for her new neighbor, the handsome and newly single Dr. Drew Baird (Jon Hamm). But our favorite neurotic TV scribe, romantically luckless as always, fumbles in her efforts to win his favor. Then there's Jack, who continues to woo Elisa (Salma Hayek). He's out to score points with her grandmother, but his stunning likeness to a Spanish soap villain doesn't help matters. —Dean Maurer

10 pm/ET NBC
As ER winds its way to an end, the parade of past stars continues with William H. Macy returning to County as Dr. Morgenstern. His presence in a sea of "new" faces reminds us of the journey this show has taken and how many great characters have made their way into our homes. Tonight, Morgenstern visits an ailing mentor, and Sam's sister (Shannon Woodward) drops by for a visit. —Rhoda Charles

Celebrity Rehab Presents Sober House
10 pm/ET VH1
For former Guns n' Roses drummer Steven Adler, the road to recovery has been steep and rocky, and he has stumbled at every obstacle. After multiple relapses (or was it just one long one?) for Adler, Dr. Drew makes an announcement: The only way that he can come back to the sober house is if Jennifer Gimenez, the actress, recovering addict and house mother of the sober house, allows it. —Fred Mitchell