Some performers make a lot of demands. During one particularly debauched tour, for example, Mötley Crüe’s concert rider required every venue to provide a submachine gun, a 12-foot boa constrictor, and a jar of Grey Poupon mustard. But Bill Nye the Science Guy is a man with few needs. Before his appearance at the Wilbur Theatre last week, the educator/TV host asked only for a club sandwich. So the promoter summoned Paul Barker of Pauli’s, the sandwich shop in the North End. “I have young daughters and we’re all fans of Bill,” Barker said. “I couldn’t pass up the chance to make him a killer club sandwich.” . . . Legendary New York Times fashion photographer Bill Cunningham stopped into the Isabella Stewart Gardner Museum to see the holiday display in the palace courtyard. Cunningham is a frequent visitor to the museum, having grown up in Boston and spent a lot of time there as a boy. He chatted with Gardner director Anne Hawley during his visit.