Scouts in the NBA are required to have good imaginations. It's sort of like buying furniture. You have to guess about the feel down the line, how it will fit with other pieces, how it will accent everything. You may be sure at the time, but you never really know until you take it home.
Some of the worst scouting reports in NBA history come courtesy of imaginations gone wild, but others are from an inspection process that was too narrow. Dead wrong scouting reports come in all shapes and sizes.
For the sake of this exercise, we'll list players only in the Internet age, where the off-base reports still live in all their glory. After all, what good is the Internet if you don't use it as a tracking device for all the embarrassing things people once said? Exactly.