Intuit recruits at my campus so I applied at our career fair. I had two on campus interviews, 30 mins each. One was a very traditional behavioral interview, "Tell me a time...". The other was a case study, they read me a short scenario, gave me five-ten minutes to think, then asked me to talk through my though process.
Next they flew me out to HQ for an "Open House" which consisted of three interviews and a day of activities/interactions with employees. I believe you are being pretty thoroughly evaluated all day. The interviews were almost identical to the on campus ones, two behavioral, one case.
Overall it was a pleasant and quick interview process, good people, great company.