If you don’t watch them now, will a guest appearance make you?

Nets are banking their guest stars for winter, as Liza Minnelli and Martin Short tape episodes of Fox’s “Arrested Development,” while Duff sisters Hilary and Haylie stop by “Joan of Arcadia.”
Also, Eliza Dushku, whose “Tru Calling” was dropped by Fox, is already back at the net, guesting on “That ’70s Show.”
Minnelli will reprise her critically acclaimed turn as Lucille Austero, rival to Bluth matriarch Lucille (Jessica Walter) and love interest for Lucille’s spacy son, Buster (Tony Hale).
Minnelli’s on board for at least two episodes of “Arrested,” although she may wind up guesting in more.
Meanwhile, Short will don heavy makeup to play a 70-year-old friend of the Bluth family — and a potential love interest for Walter’s character. On TV, Short most recently starred in and exec produced Comedy Central’s “Primetime Glick” as befuddled Hollywood reporter Jiminy Glick, a role he’s reviving in an upcoming feature.
“Arrested Development” has earned raves for its unique stunt castings, which have included unusual turns by thesps such as Minnelli, Henry Winkler, Julia Louis-Dreyfus and Carl Weathers. Pop tart/thesp Hilary Duff will guest on the Feb. 4 seg of “Arcadia” as a popular girl whose life is saved by Joan (Amber Tamblyn). Sis Haylie will appear in the Feb. 11, 18 and 25 episodes as a student who befriends Joan and her pals.
Hilary Duff, who’s best known on TV and in features as “Lizzie McGuire,” recently starred with “Joan” castmember Jason Ritter in the feature “Raise Your Voice.” Haylie Duff appeared in the feature “Napoleon Dynamite” and has guested on series such as “Third Watch.”
As for Dushku, the actress will appear in a February episode of “That ’70s Show” as Sarah, a hot girl who works at Donna’s (Laura Prepon) radio station.
Besides “Tru Calling,” Dushku’s credits include “Buffy the Vampire Slayer” and “Angel,” as well as the features “City by the Sea,” “Bring It On” and “Jay and Silent Bob Strike Back.”