IN HIS sixth book of poetry, "Ecstatic in the Poison, National Book Award-finalist Andrew Hudgins offers a host of delights. Long known as a composer of innovative, clear-sighted narratives and hard-driving, truth-telling lyrics, Hudgins now digs deep into the biographical and autobiographical, the lyric and dramatic, the comic and elegiac. Drawing on events of childhood and of later years, as well as the real and imagined lives of others, Hudgins brings to life a rich, comedic, and haunting variety of characters. Among them are a prankster who disassembles a Cadillac and rebuilds it in his attic; Russian soldiers on the verge of execution; frenzied inhabitants of Sodom; and several middle-class husbands, wives, and children.