At one point I was hired as a developer by an IT Products company which was starting a new area using (at the time) more recent technologies and programming languages, but until the thing really started going they had no significant work for me to do so I did QA for a few months (mostly automating QA).

Let’s just say that having a hacker mindset and a bit of a dastardly satisfaction in “cracking” the software is a big help in QA.

I suspect that I might have enjoyed the “managing to find a way to break somebody else’s code” part of it a bit too much.