An honest blog entry on what can go wrong when implementing Scrum. I imagine this type of problem is the most prevalent (shifting from command-and-control was a major hurdle for us).
I suggest that when adopting Scrum, you do all of it and follow the rules. Scrum is meant to be modified (especially for game development), but if you modify it from the start you are making changes to a system you might not understand and are probably embedding some organizational flaws into it. This was raised by Ken Schwaber to our last round of CSM grads.