One of Denver's prime eccentrics, historian Phil Goodstein's made the city his oyster to mine, and that's just what he's done -- he's excavated every nook, cranny and obscurity in the town's history and turned the dirt into an entertaining series of trivia-heavy tours, loaded with stories about graft and ghosts and grisly murders, including his popular Haunted Halloween rambles offered each fall through Colorado Free University. You think you know this city, but Goodstein's got you beat.