Pros
The company is full of some really great people who come to work and do their best to do a fantastic job. Many people (especially at plants) have spent their entire careers there and it is great to see such loyalty and perspective. The company offers free drinks and lots of great events to make the sites wonderful places to work.
Cons
It seems as though much of the upper management is simply there to collect a paycheck and "do their time". There is a lot of political back-stabbing (especially amongst the ex-alcan employees) in order to assert their dominance and maintain their salaries. Are these things great for the company and its employees? Absolutely not. There is a recognition at the highest levels that these things happen , but no one wants to do anything about it. If you stay in your sphere, keep your head down, and shut up, everything is fine. But do not ask questions or you will be the target of scrutiny and termination. One only has to look at the various R&D centers (Kennesaw, Sierre, Spokane) to see this pattern. If your people are afraid...something is wrong.