Ask HN: Where can I find discussion groups or code samples for senior .NET devs?

Back in 2007 I had the wonderful opportunity of working with a team of senior .NET developers who had a lot more knowledge than myself. Working with that team was the single best thing I did for my own skills, and to this day I am still learning from the source code they left behind.

Unfortunately I have since been working either by myself or with teams of less capable developers who don't have great insights into application architecture the way the old team did. I feel like any day I spend not being exposed to developers much smarter than myself is a wasted day. Since I have to pay my bills, I'm stuck working at my current job, but I want to know where such great developers congregate on the interwebs.

I sometimes see great insights posted here on HN but short-form comments aren't really sufficient to trigger the "aha" moments I used to get working on a smart team. Just recently I've checked livecoding.tv but for the most part the developers on there appear inexperienced. I've lurked /r/csharp, ##csharp on IRC, but still find very little in the way of senior developers who want to share great insights. Where should I be looking? I'd really like to see actual source code too, not just long form articles.