Just finished a presentation (via Skype) to Kris Olds Introduction to the City class (GEOG-URPL 305) at University of Wisconsin, Madison. Always a bit challenging when you aren't in the same location but it worked well on my end, hopefully it was useful on the other end as well.
Amazing how easy a video link is with simple webcams and laptop computers. When I did a lecture remotely five years ago, we had to use a special room with video cameras and about 2-3 people providing support.
Also, Kris has set up a really interesting class blog related to urban geography topics.