I will try and Help
I was interview'd by a very polite officer in Oakland.
The officer checked my application, passport, greencard and Driver license.
He then asked a few questions from my application. (For eg the dates I had travelled outside US).
I was asked to write one sentence in English. "Today is a Good day".
Then came the history/civics part, he asked me the following questions,
"Who makes the law in US", "Who is Francis scott key", "What does the stripes in the flag mean", and 2 more questions from the list.
He then handed out the application for US passport and a letter which said that he will approve my application.
The interview IS NO BIG DEAL AT ALL, As long as you don't have any bad history
, and you are prepared well with the 100 questions from the INS site YOU ARE ALL SET.
Good luck .
CaGirl.