I love the IT Conversations site. I try to download a few and listen to them while I’m working. You really do get a different experience listening to people speaking on these topics as opposed to reading them. Ontology is Overrated with Clay Shirky and Virtual Money with Peter Thiel, founder of PayPal, are a couple of my favorites.
Yesterday I listened to an interview with Dr. Greg Raleigh about a new wireless technology he developed. It takes advantage of multi-path fading, caused by the reflection of radio signals off walls and other objects, to increase the range of wireless signals. Effectively every reflection becomes an opportunity to send a new signal. This will lead to a 10x increase in bandwidth with no change in spectrum or power requirements in the upcoming wi-fi standard, 802.11n.