I am again finding blogging time short, so I'll direct you to Ezra's post on the five best summer beers (draft and packaged subcategories). Since his list is Oregon-specific, and since I see no sign of summer, I'd suggest Oakshire Overcast stout.
You might wish to weigh in with a more general list, or a list with international selections. There's no saisons, for example. A summer without saison is like a summer without sun.
(Also, while we're talking lists, I missed Zymurgy's best beers of 2011 compilation. It seems to suggest more about where Zymurgy's subscribers live than anything else.)