Pros
In the IT world, there is a great team spirit, when it comes to people working on the same level. Many people are willing to help out - but then again, I think that is IT community and not just in Goldman. There are many resources to go to for help and many chances to do what you like, if you're willing to work for it. Most people I have worked with in IT are very open and willing to help. Also, let's be honest, Goldman does have a reputation of the bonuses and, compared to other places, it delivers upon those rumors.
Cons
There is very little encouragement for balancing work with everything else - it is assumed that people have to work a lot. There is a great deal of politics, if you cannot or do not want to play by that, you will not get far, nor will you want to. There is always much to do and no time to do it, and obviously, everything is top priority. Multi-tasking often translates into "multi-head-ache-causing" tasking