Ventajas
Cutting edge projects in the field and a top notch technical team makes R/GA a great place for techies with an art sensibility to develop their skills. The company's technical hierarchy is very flat and the enforcement of positions almost non-existent. That means that you could be doing anything at any time and while most work is related to your core activity, you will be doing a multitude of things in a project - from physics motion development to xml cut and pasting. The work environment is very liberal and people are expected to take responsibility for their work and run with it. There is minimal oversight, but help is always available if sought out.
Desventajas
Too much freedom does have its drawback. Lack of oversight and loose management generates a lot of extra hours and an extremely high workload. Weekend and/or late night work is pretty much a constant. Work tends to flow without much process and there is quite a bit of confusion on communication and client relations. I repeat another reviewer's comments that because people are expected to take responsibility for a project on their own, when that sometimes doesn't happen, a project can fail just out of owner, or someone has to pick up the extra load to make it happen. In the end of the day, because little oversight doesn't provide good info for management, people get rewarded by perceived instead of real competence - and it is not uncommon for quantity of work gets confused with quality and personal politics to trump excellence on promotions.