Here is my citizenship interview experience in Denver.
Interview was scheduled for 12.30, I arrived 30 min earlier but they called me in right about 12.30. The officer was very nice, she made copy of my DL and Green card and then we went back to her office. Main part of the interview was just going over N-400 form and asking me all the information I put in. Name, current and past addresses, name of employer, etc. She asked me for my wife's SSN but I told her I don't know it by heart, just the last 4 digits. Everything went smoothly except when we got to page 10. After asking me all the questions on the form she then specifically asked if I ever got a traffic ticket. To that I replied yes but I told her that the instructions on website say those do not have to be mentioned on application. ("Note that unless a traffic incident was alcohol or drug related, you do not need to submit documentation for traffic fines and incidents that did not involve an actual arrest if the only penalty was fine of less than $500 and/or points on your driver's license.") Then I said that I did bring proof that I paid my fine just in case. She took the document from me and asked me exactly when did it occur. I said I don't remember the date, just summer 2005. She said that she would have to change my answers on N-400 and put answers for questions 16,17 and 18 as YES. I had to sign that I agree. Now, I don't think this is entirely fair since I wouldn't call traffic ticket an offense and especially since it's clearly stated not to mention it but I really didn't want to argue about it with officer. Then there was another issue with my birthday not being correct on my green card but she said she would take care of it.
After we went over the whole N-400 she had me read a simple sentence and then write one ("She wanted to live near her brother"). After that she pulled printed set of 10 questions, I believe she asked me all of them but I got them all right. (no original 13 states or anything like that, very simple stuff like color of stripes or capital of my state). After that she said she is recommending me for approval and gave me form N-652. I will receive letter oath letter in mail. Whole thing took about 25 minutes and would be quicker if it wasn't for the issue with my birth date. Also, out of the big stack of documents I brought with me she only looked at that traffic fine receipt (which she actually kept with her) and my wife's passport. Nothing else at all...
So overall I am happy I have it behind me but it will probably make things more confusing for people that are unsure about the whole traffic tickets issue....