Popular Astronomy Lectures on YouTube

Spitzer Image Gallery (video/animations/images)

Astronomical Society of the Pacific

A History of Scientific Cosmology

http://astronomy2009.us/

http://www.astrosociety.org/iya/

http://www.nasa.gov/home/index.html

http://coolcosmos.ipac.caltech.edu/main_html/index.html

http://www.nsf.gov/index.jsp