Hi
Was there 2 years ago for about 4 weeks, my brothers ex was from Toronto. Spent most of my time in Toronto, and then a night in Vancouver on the way back home.
I can recommend the Mill St Brewery, its in the old whiskey distillery district. The coffee porter was good.
Also you cannot leave Toronto without visiting C'est What, its near the markets, just a bit up from them. It can be a little hard to find from memory there's a little door not marked too well and its down a set of stairs. They have two huge bars with lots of craft beer on tap (40-50 from memory). Most of them are local small independent Ottawa craftbrewers and even some homebrewers, the beer menu changes all the time.
There's also Steam Whistle brewery in front of the CN Tower, only one beer a pilsner, the tours not bad and you get a free beer at the end of it. The beer was a bit ordinary...
Don't expect too much from the local bottleshops (The LCBO and The Beershop) they are goverment run, Ottawa has some very restrictive alcohol licencing, its difficult to find good craft beer there (It could have changed).
Oh and be sure to visit a Timmy Horton's (Worst coffee apart from Starbucks, but the Canadians love it).