The Secret World play example
Massively has posted an article with a walkthough of what seems to be pretty much the first instanced team experience the players will encounter in The Secret World. It consists of three parts and is about 20 minutes in total, showing a few aspects of the gameplay. It showed some good elements I think and if this is one of the first instanced team experiences it looks promising I think.
When watching this and some othe related videos I also ran into another developer walhthrough from a few months back (in March). This covers some areas a bit more in depth and also some other gameplay elements, plus shows other areas in the game also (but some of the enemies are the same). I had not seen that one before, so that was also a good one to watch, included below. This one is about 30 minutes long.
I am definitely looking forward to this game.