Law & Order (8pm, NBC) - "Law & Order" enters its 20th season, as well as a new night and earlier timeslot. Tonight, a law professor is scrutinized when a war veteran is found dead in a university parking garage. Later this season, our beloved L-T, Liet. Anita Van Buren (S. Epatha Merkerson, left) will battle cancer.
Brothers (8pm, Fox) - A brand new show starring former NFL defensive end Michael Strahan as a broke football player who moves back home with this brother, played by Daryl "Chill" Mitchell, his mom, CCH Pounder, and his dad, Carl Weathers. Great cast!
Smallville (8pm, CW) - "Smallville" starts season nine on a different night. Tonight, Jor-El tells Clark to end things with Lois, but the heart wants what it wants. Brian Austin Green joins the cast as a new reporter working with Lois.
Ghost Whisperer (8pm, CBS) - Melinda delivers a tiny little ghost whisperer of her very own in tonight's premiere, which is also directed by Jennifer Love Hewitt. The show then takes a "Desperate Houswives" style leap five years into the future.
Medium (9pm, CBS) - The second half of CBS's Friday Ghost Block features NBC's castoff thriller starring Patricia Arquette. The show's producers say there will be no changes to the show, even though it's skipping to a new network. Tonight's premiere picks up four months after last season's finale, and Allison is out of her coma. But will her powers be the same?
Dollhouse (9pm, Fox) - Season two and Echo's first mission is to marry a British businessman linked to a former FBI agent's open case.
Numb3rs (10pm, CBS) - In tonight's premiere, we'll find out if Amita accepted Charlie's marriage proposal. In other business, the team is protecting a political activist who may be the target of a sniper.
Real Time with Bill Maher (10pm, HBO) - This isn't a season premiere, but one of Bill's guests tonight is former New York Governor Eliot Spitzer. Don't expect Maher to castigate Spitzer for the cheating, but still, it should be interesting.