public talk links: 

http://hven.swarthmore.edu/~cohen/presentations/public/

http://apod.nasa.gov/apod/
http://media.swarthmore.edu/video/?p=75
http://www.astro.psu.edu/coup/
http://www.ifa.hawaii.edu/~tully/outreach/movie.html
http://hubblesite.org/gallery/behind_the_pictures/meaning_of_color/eagle.php
http://hven.swarthmore.edu/~cohen/presentations/public/m1animation_block_bw.gif