Gegenbeispiel, yes I'm aware of that. It was sort of a rhetorical question to a very general statement by Charv89. Afterall we are talking specifically about the Q400 and I was trying to find out what kind of experience he had on this type (I have some).
Anyway. I think that every pilot from a part time PPL to a 20,000 hour old boy should watch that video. The interesting part for me was the signs of tailplance stall/icing on powered flying controls: Unusual trim settings was one point the video made and the Q400 trim indicator is a crappy little thing often hidden behind yellowed, cracked plastic which makes it hard enough to see at the best of times.