Decent choice of sausages at William Walter Saucissier, proper bread at Joe la croûte, excellent Champagne (Selection des Mousquetaires) made in Quebec at Marché des Saveurs, perfect goat cheese from Chevrerie du Buckland, more cheese and smart service at Fromagerie Qui Lait Cru, crazy pecan & cranberry tart from La Fournée des Sucreries de l'Erable, and any of the fabulous organic meat from Boucherie Saint-Vincent.
Other than that, Jean Talon Market a very sad and overrated place. The fish offerings are lame at best, fruits and vegetables are a vast joke of cookie-cutter merchants selling stuff from the same wholesalers. You have a better chance of finding locally grown garlic at IGA or Metro than at Marché Jean-Talon. When summer comes though, there's that one guy selling perfect organic garlic and herbs during a precious few weeks. He's not hard to find.