guys, dont make it such a big deal.  they wont ask you whatever questions you see on these forums.  trust me, they will ask you few questions ( in my case they only asked me one question, what kind of responsibilty i have working in this position) such as type of job, responsibilities and so on. 

regarding documents, i had trascript from us university, H1b approval notice, offer letter, and job description.  thats it.  if you are currently working, you also need pay stubs.  enjoy your stay in nepal with near and dear ones and dont put too much pressure on your head.  it is good to visit those indian forums, but we are not going india to get our h1b stamped.  so, think about that too.  remember, getting any kind of visa is lot easier from nepal than india   or pakistan based on the  conversation with people from those countries.