Stan Lee -- creator of renowned comics characters such as Spider Man and Thor (among others) -- will be the Guest of Honor at the Baltimore Comic-Con in August.
From the source:
"Stan Lee, the Guest of Honor at this year's Baltimore Comic-Con, will be on hand Saturday and Sunday signing autographs and posing for photographs with guests in attendance of the show. The 12th Annual show will be taking place August 20-21, 2011 at the Baltimore Convention Center."
More info here.