After doing a search, I found a pretty good list of local fireworks schedules for downtown and some surrounding areas at About.com. If you go to page 3, it gives a decent list of some of the Virginia fireworks, if anyone's gonna be going to any local places as opposed to the madhouse that is DC.
http://dc.about.com/od/specialevents/a/4thofJuly.htm
I also read on there that they're doing the Smithsonian Folklife Festival on the Mall in the days prior to the 4th. Anyone know of any other activities/festivals happening in the next couple of days?