If you haven't yet seen Josh Holmes and Steve Loethen's Internet show Code To Live, I recommend doing so.  Josh and Steve (mostly Josh) travel around the country interviewing people who are passionate about the technology on which they are working.  The video production is sometimes a bit lacking but the viewer gets a feel for the excitement people have for the work they are doing and the interviews often provide brief overviews of new technologies.

You can view this show at www.codetolive.net or http://channel9.msdn.com/shows/code_to_live