The process took 1 week. I interviewed at Booz Allen Hamilton (Boston, MA) in Dec 2009
Interview
It was very simple. Just a personality assessment and judging whether I was a fit. No real technical questions. It was long and mostly conversational in nature. I thought it would be much more of a challenge. But the people were very nice. I think its important to be articulate.
The process took 1 day. I interviewed at Booz Allen Hamilton in May 2009
Interview
Initial communication via email referral by respected employee of BAH client. Very professional/helpful - even offered to help me obtain a job with one of their clients by referring me to them. I felt this was genuinely both in the best interest of their company and their client.