Pros
Good pay, good artists, nice coworkers. The work you get to do is pretty cool and you rub shoulders with a lot of talented people. You have the opportunity to work in a lot of different fields and learn a lot.
Cons
Awful management. When they fail to get enough work into the studio they'll start firing innocent people left and right in order to save costs and save face. If you get a job here don't stop looking for work elsewhere. Your job is not safe in the slightest. Many of the managers and producers don't know what they're doing. They've often bluffed their way in the door and blame the artists and/or the market for everything they screw up. They seem incapable of keeping up with the ongoing changes in media. My guess is their quotes to the clients are too high and the delivery time is too long, since messages have to go back and forth across way too many producers and managers. They seem good from the outside, but it's a mess in there.