At the end of the nineties I had a silent comedy phase. I went back and rented every Chaplin and Keaton movie I could find and read both of their autobiographies. I read every bit of commentary I could about that era, and even took clowning classes to get a sense of how you someone can tell stories without words.
During this time, I wrote two full length biographical pieces, a screenplay called Buster Keaton's American Life and a play called Chaplin and Keaton on the Set of Limelight. I like them both, but I might never be able to do anything with them due to the legal difficulties of using real historical figures. I may post them here at some point.