Not only is the Weather Underground a great weather site (I use it in my sidebar), but they have a cool ZIP code-based star chart generator. Spiffy.
It’s actually kind of interesting how ZIP code has become such a convenient way of identifying your location in various programs and web sites (phone listings, maps, etc.). More discrete than city, but less prone to error than address.
Very nice. I used the animated zoom-in radar the other day to figure out how long I could leave the windows wide open (too cool off, no AC) before any particular bit of rain would pass over me. It’s the cadillac of weather sites.