On Monday August 21st, from 1400-2200 UTC (6AM-3PM local time) there will be a total solar eclipse that will traverse the entire United States from Oregon to South Carlolina. It will cross 11 states at a speeds over 1,000 miles per hour.
A group called HamSCI is hosting the Solar Eclipse QSO Party. The pupose is to gather scientific data for Virginia Tech to study atmospheric propagation during the eclipse. If you are around on Monday, be sure to register your station, collect some QSO’s and turn in your logs.
The rules for the QSO Party can be found here. They are pretty basic. The exchange is the call sign, signal report, and your grid square number. You can find your grid square number here. As an example, most of Morgan Hill is either CM97ec or CM97ed. I would imagine they are hopping that people do something other than 59, like most do in a regular contest. This page has a good explination of the signal reporting system.
A couple of fun sites for the ecplise are a couple of simulators that will give you an idea what the eclipse will look like from your address or zip code.
One interesting aspect of the eclipse is that the sun rises and travels East to West, yet the eclipse crosses the US from West to East, entering the US at Oregon.
One last link is the American Astronomical Society page that has lists of safe and tested solar glasses that can be used to view the eclipse. There are unsafe glasses flooding the market. Do not mess with your peepers. If you do purchase some, make sure they are safe and from a reputable dealer.