SERIES FINALE: “Just Another Day” is the title of this week’s episode, but it’s anything but. In fact, this is the last day for Eureka, and this final hour is a wrap-up that was written and filmed quite quickly, because the cancellation by Syfy was somewhat unexpected. So along with the anything-goes atmosphere, enjoy the jokes that are not-so-subtle allusions to the show’s treatment by the network. As Eureka the series is shut down, so is Eureka the town…