A few years back I spent a year working in a peer programming environment. If you have not encountered this before it is where two people work on one computer to write code. When doing this there are two distinct roles, the person at the keyboard writes code the other has the responsibility to watch, hold the "big picture" in their head and raise issues when spotted. You swap places at regular intervals when it makes sense.
This sounds like a way to produce less code at first but is actually a very productive way to work as long as both people respect each others skills.
Recently I found this talk on Mob Programming which lifts peer programming to the whole team level, to me this sounds really interesting.
Really interested to hear from people that have done Peer or Mob based work and their feedback of it, for me it was a very positive experience but I can see how it would go wrong :)
Woz