Is it just me, or do real entrepreneurs need to be less excited about this YC interview thingy. If you care so much for third party approval from PG and folks (not that they are not nice/smart ppl) but then just go to a B-school dude and get that nice degree which will surrogate for your competencies in the real world. BillG didnt need no YC, neither did Google guys and neither did the ipod god - infact even PG didnt…
In reading through most of the YC-funding companies, it seems they cater not only to Web-type startups, but also very young (on average) founders.
If you've been doing startups for a while, you don't need YC. If you're new to the whole starting/operating a business and raising money, it would seem to be a very valuable relationship. I learned most of the lessons that YC-funded founders will learn along the way. But I did it on my own, and at a cost of about $500K of my personal money when I was in my 20's. I would have gladly given up a few % for the money, and most importantly the advice and experience.