What sells it, though, is Ian McShane (Lovejoy for British viewers, Al Swearengen for American ones) playing Blackbeard, whose ship is armed with dual flamethrowers. Nice.
Slightly more worrying: Pirates 5 and 6 are apparently already in the planning and will again be one big epic story split in two for length. To be honest, I think we can live without that (again). Episodic adventures starring Jack Sparrow every few years is fine.