What really genius-level things has Fog Creek done? I remember demoing FogBugz, and it was marginally better than its competitors, but it was far from a complete game-changer. Trello is ok, but it's only marginally better than a whiteboard with post-it notes. None of these reinvent an industry, or provide something so outstanding that people rush toward it.
Don't get me wrong; I think Joel has a lot of good ideas in general, and Stack Exchange is indeed a game-changer. But as someone who continually talks about hiring "rock star programmers", I simply don't see a result that I'd consider "rock star" equivalent. But, maybe I'm missing something?
Edit: More than that, I don't even consider myself a rock star developer, just a normal developer who loves learning new things and getting a lot of stuff done. I'd be thrilled to work for a Google or Microsoft, but what would attract "rock star developers" to Fog Creek? Basically, are fancy chairs enough? Isn't the most attractive thing a super interesting problem domain?