"Duchamp Slash Riefenstahl" is a screenplay. On one level it is an edgy erotic fantasy; on another it is an interpretation of significant trends in twentieth century culture - both good and evil. Dada-affiliated artist Marcel Duchamp encounters Nazi-affiliated filmmaker Leni Riefenstahl at Jean Cocteau's residence in Milly-La-Foret, just after the two have abandoned their life's works: The Large Glass and Penthesilea. Re-examining their careers, Marcel strips Riefenstahl's Olympia down to its essence. Riefenstahl surmises that Duchamp's Given (Etant donnes) is post-orgasmic. Congruities with...