The process took 2 days. I interviewed at Boston Consulting Group (New York, NY) in Oct 2009
Interview
BCG seems like a great firm from the presentations, but it's hard to know what to think when your interviewer interrupts you mid-question to tell you that some of the reasons you've listed for why you like BCG are part of the "BS that recruiters feed to college grads in order to get them to join the firm." That being said, it probably is a great place to work, and I might have gotten stuck with the one guy who had a bad day.
It's a two part interview: two separate 45 min 1-1 interviews, with one case and some personality questions each. Be prepared to answer why consulting? why BCG? what's interesting about you? Cases are straight-forward and no brainteasers, but be sure to use the BCG structured response strategy because that's what they want.
Interview questions [1]
Question 1
Why BCG? Relates to the fact that the interviewer dismissed most of my answers.