What's Up, Hideous Sun Demon
- Blwyddyn: 1983
- Gwlad: United States of America
- Genre: Comedy, Science Fiction
- Stiwdio: Twenty Four Horses
- Allweddair: monster, spoof
- Cyfarwyddwr: Craig Mitchell
- Cast: Robert Clarke, Susan Tyrrell, Barbara Goodson, Arthur Brahm, Zachary Berger, Bernard Behrens
