Pros
Accenture is a company populated by bright, interesting and ambitious people. It sounds clichéd, but in the consulting world people are the only important asset, and the people at Accenture are generally fantastic. The amount you can learn when working at this pace is amazing, and it is a great place for accelerated professional development. The remuneration is pretty good - I used to say 'it's good, but it's not banking', but it seems like a more stable place to be since the global financial crisis led to the end of ridiculous city bonuses. A diverse range of interesting clients and interesting projects is another huge plus point.
Cons
As with any consulting firm, there are high expectations which go with the level of responsibility you are granted. The focus on delivery means that there are times when excessively long hours are required - however in my view the culture of constant long hours is dying. There is an expectation that managers will plan projects on the basis that people work normal hours, and despite peaks and troughs in activity, if the hours are consistently long then it reflects badly on the manager. There is also a lot of travel, sometimes to great places and sometimes to the middle of nowhere.