The director of legendary cult/camp classic The Attack of the Killer Tomatoes brings us the fantasy farce ''Sour Grapes'' (a/k/a ''Happy Hour.'') In this film, a Coors-like beer manufacturer stumbles onto a secret ingredient that compels the guzzlers of America to consume its product exclusively. The complication: the magic formula has been stolen by a rival brewery. The original beermeisters send Rich Little out to steal back the formula, while the rival company dispatches Jamie Farr to prevent Little from completing his mission. Upon meeting one another, Rich and Jamie discover that they're old college chums and former student activists. Together, Little and Farr attempt to foil the mercenary machinations of both beer companies.