Pros
It's a paycheck - nothing more. Once the economy begins to revive, expect significant departures. Some groups (very few), are reasonably good - good luck finding them, though.
Cons
"Ethics" are a pathetic joke, as is the leadership, but they are experts at spin-doctoring. Promotions - when rarely given - are dispensed to pets and favorites, with no correlation as to talent or capability. Very political and a who-knows-who environment - if you don't enjoy a-kissing or sucking up, STAY AWAY. Morale is non-existent - people are seriously overworked, overstressed and always looking over their shoulders for the next layoff festival to begin. If they developed and launched therapeutics with the frequency and enthusiasm that they downsized jobs, they would be a world class organization.