i got one with pricewaterhousecoopers (didnt take it up) being a total smart arse and up myself fool, i.e. they asked me what would I take to a deserted island and why, my response my girlfriend so I can have the chance to repopulate..... you need to be able to talk the talk, thats all that counts with these people, or so I have found, they like confidence, proven academic ability as well as a very healthy interest in extra curic activities....if you havent got the extra curic your behind the 8 ball BIG TIME...
also work the HR ppl, be charming, whitty, smart, funny but above all ASK A SHITLOAD OF QUESTIONS, that shows your interested, switched on and know your stuff, the harder and more involving and more obscure questions the better....trust me I know what I am doing I have vacation work at Ernst and Young at the end of the year because I follow this strategy, works every time.....
see the interview as a challenge, an opportunity to meet new ppl and show them what you are made of and above all believe in your own ability to achieve, even if it means walking in and looking like u own the place....