Shawn Spencer's family is growing. First, there's his mother, Madeline, coming to Santa Barbara for a visit, in the personage of Cybill Shepherd. And now comes news that another major television star is coming on board for a guest role. Steven Weber will be appearing in an episode of Psych as Shawn's Uncle Jack.

Jack is Henry's brother, although I don't see a big resemblance between Corbin Bernsen and Steven Weber. However, if the character is more like Shawn, that will give Weber a chance to play it wild and wacky. Maybe he'll be like his Brian Hackett incarnation on Wings.

According the TV Guide, this Psych episode sounds sort of like a Raiders of the Lost Ark/National Treasure adventure. Uncle Jack comes to town in search of a treasure. He has a map to a hidden Spanish cache of goodies and enlists Shawn and Gus in his search. Now you just know that James Roday will be pulling out a bullwhip and Fedora.

Weber, by the way, is expected back on Brothers and Sisters next season as Sarah's part-time lover. When the show wrapped, their romance was still humming.