I've posted my interview experience on the Denver thread, but will answer here too, in a little more detail:
* Which center was the interview at?
Denver
* What docs did the IO ask for?
Although I came prepared with tax docs, passports, birth certificates, etc., the only docs asked for were my GC and my driver's license.
Also, he first did the test part of the interview with me. After that he asked me to stand and take the truth oath, and then proceeded to go through the N400 form.
* What questions did the IO ask?
He went through the N400 and asked my name, birthday, address, SS #, etc. He asked about my current employment status (unemployed). He asked about my last trip outside of the US (only one trip since entering in '97.) He asked a little about my spouse, and the names of my children. Then he asked me many of the questions from section 10.A. He asked whether I had ever been arrested/cited/detained for any reason. He asked me one of the deportation questions, and also whether I had ever been to immigration court.
Finally, he asked me to answer all the questions in section 10.H., which is the Oath Requirements section.
* Did you get to pick the Oath date or were you handed an oath letter?
No, he said I would get the Oath info in the mail, and it would probably be a few months down the road. He did ask about whether my husband was also applying for citizenship. When I told him he was, and that we had applied together he found it odd that my husband had not yet received his interview info. He then looked up my husband's info for me, but could only guess that they're still waiting for background info to come back. He said that if my husband gets his interview info in time they can try get us into the same Oath Ceremony.
* Any suggestion you'd like to give based on your experience?
Be honest. Answer what's asked of you, be short and to the point... the IO is not "out to get you" but he/she is not wanting to be your best friend either. I was incredibly nervous, but a few minutes into the interview I calmed down and the interview was actually quite pleasant.
Good luck!