Cantillon, Drie Fontienen, De Cam a top notch.
Boon, Giradin, Hanssens, and Cuvee Rene can be good. Haven't had the Oud Beersel in a while, and they have changed hands.
Rodenbach is good, as is LaFolie, and Petrus Oud Bruin for the Flanders Reds. I can't forget Panil.
Goudenband was a good Brown, don't know if that is still in production.
A Berliner Weisse is a good drink on a hot day.
Geene King Strong Suffolk Ale is a classic.