congratulations on the interview. btw, when you said final, is it your 3rd round interview? i am advised by a former mckinsey partner that their final @ 3rd round interview's approcah is the opposite of the 1st two.in the 1st two rounds you try hard to sell yourself while in the final @ 3rd round, the firm will try hard to sell themselves to you. the secret statement is: one you are called for 3rd interview, the probability of you getting hired is close to 99.9%. only an incredible turn of event will dissipate this.hence, assuming that your final interview is the final final .... i guess it is more of a convivial discussion between you and the senior managers ot patners. be yourself, be relax and be personable.