Of Unknown Origin (1983)

Directed by Greek-American filmmaker George P. Cosmatos, Of Unknown Origin (1983) stars Peter Weller as a successful Wall Street executive who’s hounded by a critter a fraction of his size. Independent to a fault, Bart Hughes (Weller) refuses to call an exterminator when a rat chews through a hose in his dishwasher. Little does Hughes know, however, that the rat’s actions are the first skirmish in an epic battle that finds the white-collar executive going to extreme ends to eliminate the pesky rodent. You’d think that being married to former Playboy Playmate of the Year Shannon Tweed would be enough to loosen up the stuffed shirt; Tweed’s so careless about her clothing that she lets her jugs loose even before the opening credits have rolled.