Pros
Sony is a company with a rich brand history and this makes for an interesting work environment. The video game industry is still in growth mode, which creates an environment where contributions can be made at all levels (of course, provided that management allows for such contributions to be made). Entertainment is a integral part of people's lives and working for a company that develops entertainment product puts one "front an center" in this part of lifestyles. Benefits are reasonably good at Sony and the fact that many video game companies, including Sony Computer Entertainment America, are closed over the Christmas holidays is a nice perk.
Cons
Room for advancement is limited, particularly in certain functional areas. Japanese run leads to some complications when trying to address US or European markets.