Well done the yank! Here's the answers you got so far, with some links!

1910s Emmeline Pankhurst 1920s Charlie Chaplin 1940s Gracie Fields 1950s Spike Milligan, Michael Bentine, Peter Sellers 1960s David Sutch 1980s Erica Roe (* WARNING * - some nudity) 1990s J K Rowling

How about the 00s, 30s, 70s?