Pros
Being around sports day in and day out is outstanding. The people typically come from a team atmosphere so a casual, but team attitude is prominent throughout most of the company. Very flexible with how you integrate work and play (gyms, athletic facilities, etc.) and if you are playing soccer, basketball or tennis at any point in the day, it's totally acceptable.
Cons
the international nature of the company creates some challenges with getting decisions made and sometimes the global organization tends to drive certain mandates without fully understanding the impact it may have on the 77 other countries globally. In a few cases, there are some questionable leaders, but I guess this is subjective and would be the case in most 50,000 person organizations.