Peter Bogdanovich is no stranger to violence -- either onscreen or off. In an eerie foreshadowing of the Colorado tragedy, his very first film, 1968's Targets, starring Boris Karloff, ends with a sniper, an angry Vietnam War vet, picking off teenagers at a drive-in movie theater. But while that movie reflected the rising discord of the late '60s, it wasn't until 1980 that Bogdanovich experienced, first-hand, the full impact of violence when his companion, Dorothy Stratten, the Playboy model and actress, was brutally murdered by her estranged husband. People go to a movie to have a good time, and they...