Hi Bob,
You're probably already familiar with "ADDS", but I use it as my home page... it's handy to get a quick view of weather in various sectors using the METAR map page, and if you need detailed info there's a call-up feature with a complete list of stations and their identifiers.
http://adds.aviationweather.noaa.gov...s/adds/metars/
The radar button takes you to any of the USA sites for almost a real time look. And the interactive JAVA PIREPS function is also handy.
SkyKing