I predict you're in SV or perhaps NYC. Everywhere else the supply of programmers exceeds the demand such that only the top programmers/grads are in any danger of even getting an interview.

You could be running into people with bad attitudes. I'll blame youthful indiscretion or whatever, but one really bad interview I was in, I couldn't believe I took a day off work and drove half way across the state to interview for what amounted to a ridiculous low entry level position (bait and switch) so I started flirting with the cute HR lady and talked ham radio antennas for an hour with my future bosses boss because if they wasted my time I was going to waste theirs. Well, kids have never been known for excessive professionalism, I wouldn't do that now but I wouldn't get caught in a bait and switch either. So I guess what I'm getting at is do they look smoking hot pissed off or more confused?