What a Difference a Day Made: Doris Day Superstar
- Bliain: 2009
- Tír: Germany
- Seánra: Documentary
- Stiúideo: Florianfilm, ARTE
- Eochairfhocal: biography
- Stiúrthóir: Andrew Davies, André Schäfer
- Caitheadh: Doris Day, Peter Graves, Philip Brown, Kitten Kay Sera, Jackie Joseph, Noah Keen