Pros
Good salary and benefits, nice people, nice office facilities (the sort of thing you take for granted until you go to work somewhere with much older computers etc).
Cons
No career development opportunities - people who 'play the game' and spend more of their time brown-nosing than actually working or managing get promoted, while other internal candidates who have worked at the company for years are put through massive hoops (20 plus interviews for an internal promotion) and then passed over. NB - I am not referring to myself. Also, the organisational structure and the way my department operated meant there were no opportunities for career development and in fact the job wasn't even how it was advertised when I applied for it so I ended up working here for a couple of years and very quickly finding I was disappointed and stagnating. But for people who are in the right sort of teams with the opportunity for career advancement - or you have the sort of personality that means you will get ahead regardless - it is a good company to work for.