Josh Hartnett and Harrison Ford in Hollywood HomicideHOLLYWOOD HOMICIDE

During Hollywood's Summer Blockbuster season, we critical types generally spend three months bemoaning the tired, formulaic scripts that inevitably lead to tired, formulaic summer movies, and when we do find something worth sitting through - The Matrix Reloaded, say, or X2: X-Men United - it's almost always despite the banality of their screenplays. (Which makes the release of a Finding Nemo, in which the brilliant execution is matched by an inspired script, even more miraculous.) Who cares about inventive plotting or smart dialogue or even basic coherence if, instead, you get to watch Keanu Reeves tussle with a hundred Hugo Weavings? Undemanding, turn-your-brain-off-and-enjoy entertainment certainly has its place, and even those of us with a particular aversion to Hollywood Blockbusters might be inclined to be a bit more generous than usual in our appraisal of empty-headed summertime escapism.