this one was really hard, by the time i got my 5 favourite beer in the list, there was no room for the corporate-brew. I like to drink beer in VERY small amounts (too many close calls at Alfies Pub in Kingston) so I want to err on the side of flavour. My tastes run to hearty styles (i.e, I cannot stand Corona). So my list includes darker beer. Note that some of these breweries are now being purchased by the big corps such as Molsons (Creemore).
5) Muskoka Cream Ale:
http://www.muskokabrewery.com/
4) Mill Street tankhouse ale (this one comes in Stubbies!)
http://millstreetbrewery.com/
3) Creemore Springs Premium lager:
http://www.creemoresprings.com//v2.0/
2) Sleeman's Dark Ale:
http://www.sleeman.com/splash.html
1) Cameron Brewery (auburn ale in a 9 pack)
http://www.cameronsbrewing.com/