Venturevoice - podcasts of leading entrepreneurs such as Reid Hoffman, Evan Williams, Fabrice Grinda

I'd second the Fabrice Grinda recommendation. It's obvious just minutes into the interview that he's a straight-up A-player entrepreneur. It's especially interesting because he ISN'T an ideas guy -- rather, he's a master executor -- but does a great job of playing to his strengths. He takes proven, innovative ideas and executes the sh*t out of them in new markets (e.g. the eBay of Europe, ringtones in the US, and, currently, Craigslist international).

Premal Shah (Kiva) was incredibly, incredibly inspiring. His interview transforms microfinance from an abstract concept ("oh, that Nobel Prize thing...?") into something tangible. Did you know that you can be an angel investor for $25??

The Jason Calcanis interview gives you a much more nuanced sense of his character than you get from his blogosphere presence.

And though you'll probably avoid Sharelle Klaus -- what self-respecting tech entrepreneur would care about a SODA company, right? -- I'd urge you to listen, because it was totally fascinating. It's refreshing to get outside of the internet-startup echo chamber and realize that, well, entrepreneurship is entrepreneurship. In other words, there are business fundamentals that apply to any startup, whether it's on the web or in meatspace.