Pros
Most of my co-workers are good people and play well with others. Management quality seems to be hit or miss. Some have been great, some not so much. The PTO time is generous with three weeks vacation and five sick days starting. Stock purchase plan available and since it's a large, constantly-growing company, this is beneficial. Work/Life balance is said to be important but I think that depends on your supervisor.
Cons
Turnover rate seems high on the account side, but creatives tend to stay longer. It doesn't seem that promotions happen very often because management roles are usually searched for outside of the company. Compensation, for me, is poor. There are others in my same position that makes a substantial amount more than myself but we are supposed to get a salary evaluation soon that will hopefully "even everyone out". Depending on your manager, work/life balance can differ. Some of the clients are very demanding.