It's a cold, rainy, and thoroughly miserable early spring day in the industrial outskirts of Vancouver, but Ryan Reynolds couldn't be happier. The 39-year-old actor is finally shooting Deadpool, the wild-card superhero film that the quick-witted, effortlessly upbeat star has been trying to get made in some form for more than a decade. Now, he's finally donning the foul-mouthed antihero's red-and-black threads — and in his hometown, no less. "He's totally getting a kickback," director Tim Miller cracks about the production's northwest Canadian location. "Big-time kickback," Reynolds responds. "[I see] my menacing mother every Sunday. That's the kickback."Banter about Reynolds' "very hot" mom ensues, apropos to the film he and his director have been shooting for nearly two months now. Deadpool, Marvel's "Merc With a Mouth," is a notoriously crude crimefighter, one with a surprisingly sinister background: Born Wade Wilson, he was terminally ill until shady government experiments held by Weapon X — the shifty government research project — endowed him with super-strength and accelerated healing powers.