Pros
Good to gain that first couple of years of technical experience. Many projects to keep you busy, which means good for building resume.
Cons
You are treated like an hourly rate, not a person. You have to be 100% chargeable at all times (how realistic is this?), otherwise you are asked constantly if you are "at capacity" or if you can take on more projects. The higher level managers get away with a lot of inappropriate behaviour (and the directors and HR lets it slide just because they bring in money for the company). Like many reviewers have said, many people come in but do not stay for long. It is a high stress job, which is normal in consulting, and that is fine if they treated you more like people rather than profit making machines, however that's just not the case.