Here's a post from the footballoutsiders.com site, discussing some truths in NFL football after a lot of research. A lot is intuitive, but interesting throughout.
Some truths seems highly NFL specific, but some apply equally to the CFL, especially the one about receivers being judged on both complete and incomplete passes. Drisan James, I'm looking at you.
I'll probably come back to this article in future, looking for what does and doesn't apply to the CFL.