The Air Power Over Hampton Roads Airshow 2009 is happening this year on April 24-26 at Langley AFB - Hampton, VA.
http://www.langleyafbairshow.com/
The USAF Thunderbirds will be there. Unfortunately this airshow coincides with the shows at Seymour Johnson AFB in NC and Fun 'N Sun in Florida.
Hopefully the weather will be good, because I know the flying will be top-notch.