I applied through college or university. I interviewed at Boston Consulting Group (New York, NY)
Interview
went to several events, got through first round of interviews, enjoyed all people met, did not get an offer for the summer but was encouraged to apply for a full time offer in the fall
Interview questions [1]
Question 1
be ready for a question about a time you messed up and how you rectified the situation/what you learned
I applied through college or university. The process took 3 weeks. I interviewed at Boston Consulting Group in Mar 2011
Interview
Two standard case interviews with partners, back on back (final stage).
Atmosphere quite relaxed, sounded more like a conversation - though of course you always have to pay attention to staying on track and delivering convincing, articulated answers.
1st case was more of a brainteaser - estimate the annual income of a taxi driver in Italy. Then a few fit questions (why BCG, why consulting, guide me through your resumé).
2nd case - Food & beverage industry, redefining the distribution strategy, a bit more complicated. Then other fit questions (most important achievement, why would hire you, tell me something that's not on your CV).
Overall very positive - I joined them for an internship and the office culture is extremely informal - with lots of empowerment for newbies like me.