I received an email asking me about 10 detailed questions.
Next I was schedule for a 30m phone interview
Then an interview with my possible boss during a lunch (1 hour)
I was then asked to do an entire day of interviews that started with a 45m presentation about myself. My potential manager and I worked for hours on my presentation back and forth over the weekend. I ended up doing 4 revisions with case studies etc
The day of the presentation, the room was filled with VPs, directors, overseas dial-in peers, and about 5 other soon-to-be peer managers. I introduced myself as everyone walked and and the vibe was great. I gave the presentation and apparently I bombed it. Although they laughed and seemed to enjoy the presentation and my overall presentation abilities. I was then walked around the office areas and told what a great fit I would be for the company. During this time the folks in the room were talking about me as a candidate. After all these interviews they passed on my candidacy and promptly walked me out of the building.
The company has benefits and a culture that makes all the time spent worth the shot at joining them.