Pros
As everyone else mentions, the people are a lot of fun to be around and everyone (it seems) goes out f their way to invite you to lunch of the bars after work. No one talked smack behind someone's back and the office environment never tried to ostracize anyone. When it comes to taking time off, the schedulers are very willing to accept and I never experienced any push back from taking a random day in the week off or a few weeks.
Cons
If you aren't scheduled on a client, you literally sit in your chair all day and do nothing. When someone asks you to do something, it is 90% of the time a menial task which is one that person shouldv'e completed themselves. If you want a job that you always know what your schedule will look like, this kinda work is not for you.