I'm standing in a drab, monochromatic police department TV set in Vancouver that could quite feasibly serve as the base for any number of procedural police dramas on the air right now. Except this particular police show has something none of the others do: a foxy cop from the future. Yes, the cop and sci-fi genres have been melded together for the hot new summer show "Continuum," set to debut on Showcase this week. The show follows Keira ...