I will look at all these ideas guys. Only 6 of the screws in the iPhone 4 actually have washers on them. And I don't ever take them completely out. Just loosening them allows the frame to come out just fine. Just a tip : ) If you take them out, they're the devil to get back in.
The sleep/wake button is a good one considering that is a known issue. And a home button replacement. The problem with a home button replacement is almost the entire phone has to come apart.
Maybe we should start putting a rating on guides? Easy to ninja difficulty?
The sleep/power shouldn't be TOO hard. There's 3 things that could cause that problem (the bracket, the actual flex cable, or the actual button). I could probably combine them into one video though.