Dozens of webcasts [1] of entomology seminars are listed on this page. Topics include beetles, ants, bees, Colony Collapse Disorder and many others. Click here for the webcasts [1].
Links:
[1] http://entomology.ucdavis.edu/news/webcastlinks.html
[2] http://www.entsoc.org/buzz
[3] http://twitter.com/share