Initial interview was a one hour phone interview.
2nd interview was several weeks later, on site with the management team.
3rd interview was also onsite and included a presentation on how I might do the job at hand. I was given a brief background of the "problem" and a couple hours to prepare my presentation. The presentation lasted a few minutes and the team responded with feedback and questions.
To be successful, you need to be personable, down to earth, hands on, and perceptive.