IdaDurham (New Hampshire)
Is there a craft beer scene in Cleveland? If so, what are the must visit breweries?
I agree with Great Lakes and Market. Fat Heads Brewery & Saloon is really good and Hoppin' Frog Brewery in Akron makes some awesome stout beers.
Mentioned in this answer:
Great Lakes Brewery! Also, if you're in that neighborhood, I really like Market Garden Brewery. Great Lakes is the quintessential "must have" Cleveland beer though, if you only have time for one. :)
Platform Beer Co. on Loraine.