One of the best warm weather dishes ever is the cold soba noodle salad. It's very refreshing with tons of light and healthy flavor.
This one comes from Mt Fuji Japanese Cuisine in Albany, NY. I really enjoyed this little strip mall Japanese restaurant because of the amount of care they put into preparing the food. Everything was deliberately placed on the plate and the service was great. It's part of the Stuyvesant Shopping Center, but it doesn't quite feel like it should be. (that's a good thing)
--Joe