This weekend are the Robin Hood Day's in Sherewood. It's a free ren faire type event put on by the SCA.
Also, according to some on on damnportlanders is the Highland Games. (Cabers and Haggis. You can toss twice in one day!)
And I was thinking of, this weekend or next, going to the Japanese Gardens to take pictures. I've never been there, and I think it's about time.