After going to my interviews i really think all you should bring is your best suit and a pen. Only bring a leather folder if they ask you to bring in a photo or some other paper work. I think for the interview itself you should have preped some questions before hand for your interviewer, and go in and just have a conversation. My personal belief is do not hold a folder, do not write anything during your interview, and if you do receive your interviewer's card just slip it in your coat pocket. I say this because i think the best interviews are when you are completely focused on the topic at hand and conversing freely - writing while talking makes you look distracted and having a resume, PS, or CV is just a waste, you should beable to speak to your credentials and your interviewer is going to want to hear it out of your mouth not attempt to read it on a piece of paper.. after all this is an interview. Just my thoughts on the whole process.