This petite, quirky lead with a winsome sensuality and distinctive overbite first played adolescents in several high-profile TV-movies in the late 1970s before coming into her own as the star of offbeat, independent films of the 80s. Hailing from a bohemian showbiz clan (her grandfather was radio and TV humorist Cliff Arquette--Charley Weaver of "Hollywood Squares" fame; her father, actor Lewis Arquette; her younger siblings, actors Patricia, Alexis, and David Arquette), Rosanna Arquette became established in features playing slightly spacey women often torn between the desire for adventure