I used to do .Net programming a few years back and I used to love Jon Skeet's answers for any .Net question on SO. Precise, informative and simple explanations.

It's been a few years since, but if I remember correctly, it was an interview of Jon Skeet on an episode of Scott Hanselman's podcast where he spoke about reading the C# spec, and as a young beginner in programming I loved that advice because when I did read the spec, I was pleasantly surprised, perhaps naive, that all the information I needed to learn the language was right there, available for free when I thought I had to purchase books etc. to learn more. :)