I have heard of more and more authors taking a page from Hollywood and working together. Often these are called Ghostwriters. A big name gets together with a lesser known writer, the lesser known one does all the work, the big name one signs off on it and gets the big print on the cover and voila, instant bestseller. I have even seen it work with lesser known names as in The Spiderwick Chronicles. Two people, like minded who come together for a common goal. Even some of our contemporaries have done this with some of their current works- Brian Keene and a handful of other writers have gotten together for various projects. Reading his blog he seems to enjoy the collaboration.
I am wondering where this is leading and are there any projects you have going on that a second mind involved throughout the project, instead of at the end to proof it, would be a good thing. Or would it take a good friendship and chuck it out the window over creative differences. My other thing is who does what (You take this chapter and I'll take that chapter. We'll see if they mesh together when we're done.)
I came across this idea while talking to a friend and it was confirmed when I saw a video of Eric Idle talking about collaborations on Monty Python. It is a good video, insightful.