Here in Hampton Roads we have the Langley AFB airshow in the spring (it was a few weeks ago) and then the Oceana NAS
airshow at the end of summer. Usually that means we get the T-birds and a lot of Air Force hardware in the spring, and the Blue's with all the Navy/Marine hardware in the fall. Langley is an F-22 base as well, so definitely get a demo of one of them. And, on the non-mil side, FedEx always parks its 727 at Oceana the weekend of the airshow and opens it up to walk through.
As I recall, Willow Grove JRB
up near Philly put on a good show. Since it is a multi-service base, there is already a good variety of aircraft on hand to see. I believe that base is close to being gone though, not sure if they are still doing airshows.