What good concerts will be in Cleveland this summer?

I'm going to be here through August, and would love to get to a few shows or festivals. Is anything good coming to town? I tried looking at ticketing websites, but they all seem to ask for a venue name and (being new to the area) I don't know any.

I prefer rock or heavy metal, but post any good shows you know of and let's get a list going. Try to note band(s), date, venue, and genre if you can.