I have many posts that I want written but do not have time to write and I suspect there are other people that feel similarly. This post on the Solomonoff prior was one example, until I got fed up and just wrote it.
Please write one post idea per answer so they can be voted on seperately.
A thorough description of how to do pair debugging, a CFAR exercise partially described here.
I've written up my thoughts on doing (informal) pair debugging from the debugger perspective here