Surprised no one's mentioned Cascades yet. I prefer that area with Fortune & Edelweiss there too. Can't beat these for proximity to Ottawa.
Tremblant (of course) & Mont Ste Marie. Even Pakenham. Hoping to try a few more this year.
Mont Saint-Sauveur has been open since Hallowe'en I think, but haven't been there.
Would be cool if Fortune, Cascades, Vorlage and Eidlewiess offered a super pass type deal like some of the western resorts do.