As her younger brother's series ends its second season on FOX, Justine Bateman is seeking her first regular role on a network series in several years.

Bateman, best known as Mallory Keaton on "Family Ties," has joined the cast of "The Show with AJ Calloway," a comedy pilot set up at UPN. Comedies at CBS and NBC have also added to their casts.

"The Show" is a fictional take on the life of BET host Calloway ("106 & Park") in which he plays the host of a late-night talk show. Bateman, "Arrested Development" star Jason Bateman's sister, will play his confident new producer, according to The Hollywood Reporter.

Bateman earned Emmy nominations in 1986 and '87 for her work on "Family Ties." More recently, she was a regular on NBC's "Men Behaving Badly" and appeared in Showtime's limited-run series "Out of Order." She also starred in "The Hollywood Mom's Mystery," a Hallmark Channel movie that aired last year.

At CBS, stage actress Jama Williamson has signed on to "Three," a comedy about a married couple and their recently divorced friend. She'll play the wife of James Van Der Beek's ("Dawson's Creek") character; "Less Than Perfect's" Zachary Levi is the divorced guy.

NBC's comedy "Fillmore Middle," meanwhile, has signed Deon Richmond ("The Cosby Show," "Not Another Teen Movie"). He joins a cast that already includes "Coupling" star Sarah Alexander and Justin Bartha ("Gigli").