Great thread, I see this going well into the hundreds if not thousands of posts. :)
My personal beer preference depends on the day, my mood, what I'm eating and how much I plan to drink. I love trying new beers, too. If I had to pick one though, it would be a hefeweizen.
Two micro breweries here that really do a great job are Propeller
Propeller had a hefeweizen that was brewed with clove and banana (it tasted nothing like bananas, don't worry). For some ungodly reason, they decided to stop making it last summer...what I wouldn't give for a personal supply of that stuff...
Recently popular with Propeller has been a Double IPA, hoppy as hell and 9% if my brain remembers, big seller.
Fuo: Good choices on Chimay and Fin du Monde...nothing quite like getting a Fin in Montreal.