What a Difference a Day Made: Doris Day Superstar
- An: 2009
- Țară: Germany
- Gen: Documentar
- Studio: Florianfilm, ARTE
- Cuvânt cheie: biography
- Director: Andrew Davies, André Schäfer
- Distribuție: Doris Day, Peter Graves, Philip Brown, Kitten Kay Sera, Jackie Joseph, Noah Keen