The summer movie season starts around Memorial Day, and movie companies are striving to turn around their box office woes of last year by putting out what they feel to be high quality films like “Mission: Impossible III,” “X-Men 3,” and “Debbie Does Everyone and Everything In Sight 26.” (But let me tell you, you almost have to see “Debbie Does Everyone and Everything in Sight 25” to get the full impact of the sequel.) Among the films vying for your ticket dollar is “An Inconvenient Truth,” a documentary by Al Gore addressing, surprise surprise, global warming. It hasn’t even...