Greta Garbo
From Tardis Wiki, the free Doctor Who reference
Greta Garbo was an actor with a distinctive accent. Fitz Kreiner once impersonated her with the phrase "I vant to be left alone." (PROSE: The Year of Intelligent Tigers)
The Eighth Doctor recalled a picnic in a dusty valley with Greta Garbo, Christopher Isherwood, Aldous Huxley and Bertrand Russell. (PROSE: The Scarlet Empress)
In 1929, Iris Wildthyme and Panda attended a sauna party with her. After the party, it took ages for Panda to dry out and Iris complained that her Celestial Omnibus smelled of wet fur for days. (PROSE: Rain and Regency)