HomePeople Biography and filmographyGene O'Neill Gene O'Neill is an American writer, stage and screen actor. Movies (3)TV shows (4) Movies (3) Down Twisted1987 · Screenplay The Stuff1985 · Scientist Tartuffe1978 · Deputy TV shows (4) Earth: Final Conflict1997 · Writer Spy Game1997 · Co-Producer Xena: La Princesa Guerrera1995 · Writer Hércules: Los Viajes Legendarios1995 · Writer, Teleplay