Quilting by the Lake in upstate New York
http://www.quiltingbythelake.com
2 weeks late July. 2010 just finished.
Fabulous quilt show - all the instructors have quilts hanging; interesting, varied vendors; classes with well-known national and international instructors.
I began going in the late 80s thru early 2000s.
It's expensive to attend but cost nothing to see the exhibit and shop the vendors