All summer movies want to create buzz, but rarely is the intended buzz "Support the McCain-Lieberman bill." The movie is "The Day After Tomorrow," the global-warming flick that aims to gin up support for the sort of greenhouse-emissions regulation sponsored by John McCain and Joe Lieberman. The premise of "The Day After Tomorrow" is as laughable as its dialogue. "I think we've hit a critical desalination point" passes for snappy repartee in the film, as global warming melts the polar ice caps. This disrupts the Gulf Stream, plunging North America into a new ice age. Tidal waves devastate New York...