Weather: http://www.srh.noaa.gov/jetstream/
UC College: http://www.ucopenaccess.org/
Art of Problem Solving: http://www.artofproblemsolving.com/Alcumus/Introduction.php
World Lecture Hall: http://wlh.webhost.utexas.edu/browse.cfm
Academic Earth: http://academicearth.org/
