Cast update: Greer joins Shootout

The talented and very funny Judy Greer is a star in the making; the problem is that she can't seem to find a show that will stick around long enough to bring her into the upper echelon of comedic actors.

Perhaps best known as the boob-exposing secretary Kitty Sanchez from the cult comedy Arrested Development, Greer's latest gig was cut short when ABC opted not to renew freshman comedy Miss Guided. Prior to that, she was part of the ensemble cast of Love Monkey, which lasted a mere eight episodes.

Greer aims to turn things around with her new role as lead in HBO's upcoming Suburban Shootout, according to The Hollywood Reporter. The show is (once again) based on a British dark comedy about a woman (Greer) who escapes the concrete jungle in favor of the peaceful suburbs. However, said suburbs are actually a war zone that is being fought over by groups of violent housewives.

A very different neighborhood may also be getting a new visitor. Rumor has it that Tori Spelling will be making a cameo appearance in the debut episode of CW's 90210, the modern-day remake of the teen classic Beverly Hills, 90210.

E! Online says that 90210 alum Spelling, after vocalizing an interest in appearing in the show, will reprise her role as Donna Martin. Last week, former 90210-er Jennie Garth joined the cast as a recurring character. Also rumored to be jonesing for a part in the show is Ian Ziering, who played Steve Sanders in the original.

In other news, Julie Bowen, who played Jack Shepherd's wife Sarah in ABC's Lost, will be joining the cast of Showtime's suburban pot comedy Weeds. According to TVGuide.com, she'll play a single mom who pursues Nancy Botwin's (Mary Louise Parker) son Silas, played by Hunter Parrish.

Elsewhere, Craig Horner and Bridget Regan have taken the leads in Sam Raimi's fantasy show Wizard's First Rule, and Rome's Polly Walker will be joining Sci-Fi's Battlestar Galactica prequel Caprica.