Pros
Endless amount of free chocolate, strong brands to work on, great health benefits, many resources and tools to do your job, great training (Mars U.), etc. Mostly really good, hard working people that care for the company. I do think that they try to keep the five principles working in action.
Cons
The end of year review process is painful here. Even when you've done 8 out of 10 things on your individual business objectives (IBO's) well, your supervisor will spend 45 minutes beating you down on the two things that you could have done better. Hoping that part of the culture changes as the company evolves. It does get a bit political as I've seen several associates get rewarded and promoted even though a program they worked on lost the company money and was mismanaged. Hiring - Very focused currently on only ivy-league style MBAs... good thing to have a myriad of backgrounds and experiences, vs. all being so cookie cutter in approach. Locations of most of the offices aren't ideal unless you want to live in the 'sticks'.