Employees at this Big Three management-consulting firm get to help the top leaders of top companies take on their biggest problems. That's a huge draw for MBAs looking for a challenge. "They know that right away they're going to jump into situations where they're working with seasoned senior executives on the issues that keep them up at night," says Keith Bevans, partner and global head of consultant recruiting.

In addition to client work, all workers participate in the "Extra-10 percent" program, devoting some time to projects that benefit the home office, such as training, social or volunteer programs.

What they're looking for: In addition to the basic analytical and communication skills required of consultants, Bain wants to hire MBAs with varied experiences and backgrounds. They're looking for new hires that can hit the ground running in a consulting role, with demonstrated problem-solving skills, leadership and passion.