How the streets of San Francisco got their names: a fun little history lesson, nicely formatted as a giant clickable map (with search if you just want to look up a specific street).
Celebrity Maps is a google maps/stargazing mashup that makes stalking your favorite star so much easier. And it doesn't even cost you $5 on Sunset.
Google Maps now does satellite images which is pretty cool (zoom all the way in), and what everyone predicted they would do with the Keyhole software company they bought. The part that freaks me out is finding my own house with my own car in the driveway, taken last fall (by the looks of construction in the neighborhood). I guess it's time for all of us to have our Streisand moment and wonder when satellite imagery has gotten too good. [via]
This map, sized based on electoral proportions makes a lot more sense than the standard state-by-state or county-by-county one (that last one was marked up by peterme).
Casey over at Boiled Brains is working on a weblog map of the universe. Currently, it only works in Netscape for me, and it doesn't do much, but I hope that someday it will be as cool as the Interactive Map of Strategic Alliances in the Internet Industry applet.
Remember the movie "The Day After?" Back in the Cold War days, we were all worried about someday being vaporized by a nuclear blast. Well now, in this post-Cold War era you can relive those wonderful memories with PBS' Nuclear Blast Mapper. I popped in the coordinates for MetaFilter's server location, set the bomb to a 25 megaton blast and this is the result. Think about that the next time you hear a country gets their first nuclear weapons.
Oakland, CA has a pretty cool application of GIS on the web. You can look up crime statistics and analyze the data by overlaying it with community information (where police districts are, where liquor stores are located). It only runs in Netscape for windows, so here's a screenshot.