It depends on where you are interviewing. At private programs, I would suggest that it would hurt your chances of matching at that program if you give the impression that you are interested in going into academics and doing a lot of research. At university programs, depending on the attitude of the chairman toward research, it is probably best to at least imply that an academic career is not out of the question, but if you fake it and pretend to be hard core academic when you are not, most will see right through it.