Hmm.. Are there incidents that were caused by Controller's error? (most common seem to be equipment failures, pilot errors, bad weather and bad luck with bird strikes etc.)
There is a nice wikipedia list here: https://en.wikipedia.org/wiki/Category:Aviation_accidents_an...
Of course I don't think it is correct to say that an incident were caused by controller error. It makes it sound like a single controller error was the only thing which went wrong. It is probably more correct to say that controller error contributed to the outcome of some incident.
Like many others (I am sure) I read the comments first and read article later (if I read).
I was responding to the informative comment about the rigorousness of Controller training. As a nervous flier myself, that made me feel a bit better.