Cozy as a cup of cocoa, Keillors new novel, Pontoon, revisits Lake Wobegon through material first auditioned in some of his radio monologues. The satirical targets are familiar, too, the moroseness of small-town Lutherans and the goofiness of New-Age-ism (one characters a veterinary aromatherapist), and the whole has a sort of keeping-his-hand-in quality, though its no less hilarious for it. Never has he so playfully juggled plotlines as in the books farcical climax, in which plans for a wedding, a funeral, and a conference of Danish ministers collide on the lake itself one sunny afternoon. Theres more sex than usual, too. Keillors reading is co-sponsored by Elliott Bay Book Co.