"Once or twice" is right on the mark, and so is "before 1985." The Brew Crew only saw post-season action in 1981 and '82, when they lost a spectacular World Series against the Cardinals.
Those early '80s teams were very good and fun to watch, featuring players like Robin Yount, Paul Molitor, slugger Gorman Thomas and the always-entertaining Rollie Fingers. Since those glory days, however, the Brewers have been suffering the longets dry spell in the majors.
Good call!
