Inspired by this thread, especially this post (slightly snipped for brevity):
There are some plot devices that are pretty easy to do well, as long as you’re not terrible. And then there are some plot devices that should only be touched, if ever, by a really good writer.
So, what are some mechanism that usually ruin the book for you, but occasionally someone does them very well? (And tell us the name of the gifted author who did so).