Andrew Warner's Mixergy (www.mixergy.com) pretty much fills this role for me -- some of the talks are merely good, but many of them are amazingly great. I like TED Talks too (and they have much better production values than Mixergy), but Mixergy is something everyone should listen to as well. (imagine: interviews of interesting people by someone who actually is himself both a subject matter expert AND insightful and probing without being obnoxious...)
I spent last year going through the ~300 interviews. I can't recommend them enough.
The only problem is remembering the best ones.
I was thinking of creating a wiki with notes on what you will learn. When you want to learn about a topic (ecommerce, building a community etc), it'll be easy to find the guests who can help.
