Jane Fonda is developing Carlos Fuentes' book, "Gringo Viezo," which she will produce and star in. Luis Puenzo will write and direct the drama, which shoots in Mexico late this summer. . . . Art Carney has a forced reunion with his feuding brother Barnard Hughes when they are trapped in the basement of a building they built in an episode of "The Cavanaughs" that shoots this week in L.A. . . . Robert Carradine leads the nerds in a deadly battle with the jocks for the control of their own destiny in "Beyond the Revenge of the Nerds," which shoots in Fort Lauderdale in March. . . . Caryn Richman (the new Gidget) and Peter Scolari ("Newhart Show") are counterfeiters in an episode of "Mike Hammer" . . . John Getz, Tovah Feldshuh, William Allen Young and Susan Brown are prison shrinks and inmates who try to maintain law and order in "Mariah State," an upcoming ABC series now shooting in Toronto . . . Frank Stallone plays a bitter bartender who constantly hassles customer Mickey Rourke in "Barfly," now filming in L.A.