Mountain View Project Manager interview questions

first interview by HR to determine the personal characteristics are compatible for the title and the level of intelligence with some Direct questions such as "why we should hire you" second interview with the CEO,COO for the pure technical and management sides third interview was with the chairman and this was simple- hard since he was examining my way to deal with the clients and generally my personality forth interview by HR to discuss the salary and offer benefits before sending it formally finally receive the offer