Heard of this ALT.NET thing?
I think the ALT.NET brand is recognizable but awareness is lacking a bit.
If you've been wondering what exactly is going on, take a look at this short piece in the latest MSDN Magazine by Jeremy D. Miller. And then head to the wiki for more.
I was in Austin in October and I'll be in Seattle in April...
[update] Hanselminutes podcast on ALT.NET with David Laribee