http://earthquake.usgs.gov/recenteqsww/
Here's the USGS world link
Thanks. I know about the USGS site, but I like IRIS site better for the map. It's larger and easier for me to read (I've got REALLY bad eyes) and I like the fact that it shows, at a glance, the day/night sections of the world. That's sometimes a useful piece of information, whether looking at an earthquake event or just a quick check when a news event happens somewhere.
I actually found it while looking for one of those day/night world maps to put on my desktop. I wrote a little HTML page that I embed the image in and have a metatag do a refresh every half hour. I did another one of the local weather radar off of NOAA.GOV, with a refresh every 5 minutes for that one.