On a serious note, dressing "right" for an interview isn't all it's cracked up to be. Far more important - do your homework on the company, the job you are going for and how it fits in to the company heirachy. Know your background and if you research something they don't ask you in the interview ask them about it at the end. You can look a million dollars but if you haven't done your research it counts for **** all. On the other hand looking presentable and knowing your stuff goes a long way. Keep eye contact, smile, look at all the panel and not just the one asking the questions, try not to ramble and don't be scared to ask them to repeat the question or clarify something for you. Treat every interview you get as a learning experience - you can never have a bad interview. I've had two interviews this year, the first one I crashed and burned badly, the second one I got the job, mainly because of what i learned from the first one.