Over two decades, dishes like oysters Giovanni, with its "stained glass" array of sauces, and seafood salads served in martini glasses became the calling cards of Cafe Giovanni (117 Decatur St., 529-2154; www.cafegiovanni.com). To celebrate his restaurant's 20th anniversary, chef Duke LoCicero is promoting a six-course dinner of these and other Cafe Giovanni specialties. The dinner includes wine pairings, costs $65 and is served nightly during November.