Google Maps zipcode mashup: Several folks have blogged this (http://maps.huge.info) today, but I couldn’t help myself. Type in your zipcode and you’ll see a red line showing its boundries. It’s the simple things that thrill me.
(Note to, well, you know who you are: wikipedia entry for mashup.)
(via: programmableweb which has lots more mashups and directories of services that with APIs that allow them to be mash-upable.)