Pros
You can learn a lot in a short period of time, you can get exposure to every management style and every type of analysis IF you know where to look. You won't make a lot of money here and the class below you could be making more, but you can use PwC to your advantage. Move around, A LOT. Seek work in various departments and with lots of managers. The exposure can help your career in the long run and set you up to work on other things when you escape. Lifers are VERY rare. Don't worry if you're not one.
Cons
You will be worked into the ground and when you wear down, they'll replace you. You're just not important. Your vacation and your health issues are YOUR problem. If you're looking for warm and fuzzy, go elsewhere. My health was so bad I spent a week in the hospital and not a single manager, director or partner i was working with checked to see if i was alive. The better managers i had worked with in the past called to check, but no one i was working with on my current project. In addition to the above, the pay is so low. You can make more slugging it out in industry.