This is awesome.
IRIS recently released a newer, better earthquake browser which allows you to visualize a gi-normous earthquake catalog in your browser and in pseudo-3D!
Want to see for yourself? Visit http://www.iris.edu/ieb to see over 50 years of seismicity and 3+ million earthquakes!
For the full details see http://www.iris.edu/dms/newsletter/vol15/no3/iris-epo-team-release-the-new-iris-earthquake-browser-ieb/
Happy Holidays from all of us at OSOP,