God Bless America.
While I would've enjoyed a well made movie based on the same idea (an average bloke on the end of his string going on a killing spree against obnoxious, mean, impolite and bigoted people), the execution lacked charisma and charm. It wasn't as clever or funny as the writer/director probably thought it was, nor was it morally anchored, and most of all it was plain boring. A missed opportunity.