In the enthralling Blow Out, brilliantly crafted by Brian De Palma, John Travolta gives one of his greatest performances, as a film sound-effects man who believes he has accidentally recorded a political assassination. To uncover the truth, he enlists the help of a possible eyewitness to the crime (Nancy Allen), who may be in danger herself. With its jolting stylistic flourishes, intricate plot, profoundly felt characterizations, and gritty evocation of early-1980s Philadelphia, Blow Out is an American paranoia thriller unlike any other, as well as a devilish reflection on moviemaking