I got my visa stamped from Nepal last week. The interview lasted for only few minutes.

Questions asked: Where do you work? Your job responsibilities ? School?

There were 3 h1B cases, only 2 got visas (myself and another guy who was a engineer from TX) . For some  reason , the other  guy employed by some consultancy was rejected visa.

Make sure you have all the documents ready before you go for the interview and just be confident...Good luck!!!