So, there's been a bit of a debate going on in the comments below about the proper definition of a "Natural Hat Trick" in hockey. Fortunately, we have with us today one of hockey's all-time greats to clear things up:
(clears throat) Ahem. A natural hat trick is when a player scores either a) a goal in each of the three periods, b) three goals in one period, or c) three of his team's goals in succession in one game.
In other words, we were ALL right. Isn't that special?
(here's the source if you're curious)