Pros
A $16 billion company having presence in all kinds of Industries and locations Some segments are very strong. E.g. BizCloud is consistently rated the leader by analysts on par with Amazon, way ahead of Microsoft Azure, Google's app engine, Rackspace and Oracle. Research wing particularly the Leading Edge Forum of Office of Innovation (of which I am a part) is one of the pioneers in most contemporary technologies.
Cons
Though consultancy presence in 800+ locations in every conceivable country in the world, delivery centers are predominantly in low cost geographies (India). The biggest delivery centers are in India with a combined head count of 23000 employees. The second biggest is in Vietnam which has a head count of 800. You can see how skewed is the delivery distribution. It takes pride in comparing with other services companies like Infosys and wipro. Where as considering it's size and historical background it should be compared with product companies like Microsoft and Oracle. It tries to do a catch up game on most technologies and more over there is a big gap in marketing. LEF and Delivery gaps are very wide. There is a step motherly treatment for Delivery centers. E.g. there is no reason social networking sites should be blocked in India and open in other locations. Many often I have seen it competing with other companies on price margin to win projects. Avoids going to top technology and management schools for recruitment. There are many factors though.