The http://worldbridges.net internet radio network has provided an opportunity for the growth of homespun, 'net-based radio.
I've had the good fortune to be able to participate as a webcaster and interact with people from literally all over the globe. This provides a perspective and a dynamic that has heretofore been impossible, which makes it all the more exciting.
For the past while I've been hosting the EdTechTalk Brainstorming Sessions on Thursday nights (in North America) in which we discuss education technology and how it may be applied by educators.