What a Difference a Day Made: Doris Day Superstar
- Godina: 2009
- Zemlja: Germany
- Žanr: Documentary
- Studio: Florianfilm, ARTE
- Ključna riječ: biography
- Direktor: Andrew Davies, André Schäfer
- Uloge: Doris Day, Peter Graves, Philip Brown, Kitten Kay Sera, Jackie Joseph, Noah Keen