Dan O'Bannon worked primarily in two genres.
 O'Bannon moved home briefly after Washington University and attended Florissant Valley Junior College where he wrote and directed a short science fiction satire titled "The Attack of the 50-foot Chicken
 While living with his friend Ronald Shusett, they came up with the story for O'Bannon's career-making film Alien (1979), for which he wrote the screenplay and supervised visuals

