Already posted, but as many have said it's an exciting match up, but quite possibily a losing one for our fan favorite; BJ Penn.
Rory is not content in throwing elbows on the ground he's going to look to finish. He's young and borderline/reckless but for the most part controlled. I don't think BJ can hurt em, and he's (Rory) pretty strong so BJ's jiu jitsu game won't really come into play unless he lands a good shot and somehow takes his back. Otherwise I see Rory standing in the pocket hunting BJ down forcing him to engage which will tire him out.
Rory is the "Canadian Psycho" in my mind. He just seems like one of those kids who was never social, quiet, and introspective. All that gets exploited when he gets locked in a cage. I like BJ, but this will probably be a losing battle with Rory pushing a relentless pace even more so than with Nick Diaz.
I'd rather see see BJ face The Korean Zombie at FW and Rory vs Josh Koschek.
Marcus Aurelius: Tell me again, Maximus, why are we here?
Maximus: For the glory of the Empire, sire.
Baked, not fried... the healthy choice.