Recently, "Honey."
And all time? "The Black Hole." Largely because of how could it could have been. Interesting premise, solid villain, fucking Maximillian's ownage. But the lousy special effects, innappropriate scoring moments, lack of coherence, logic, Maximillan Schell slapping his forehead, the robot subplot, Ernest Borgnine and Yvette Mimeaux... UGH.