Doctor Who: "Planet Of The Dead" Trailer

So, the Doctor Who Easter special is essentially Pitch Black (with the twist being it takes place during the perpetual daylight of a desert world), combined with the claustrophobia of season 4's "Midnight"? That's the vibe I'm getting from this trailer for "Planet Of The Dead", anyway. Do you agree? Is this enough to get you excited yet? And doesn't Michelle Ryan look great as the companion? Shame it's not a permanent appointment, if you ask me. Is it too late to cast her, Steven Moffat? The special airs on 11 April on BBC1/HD.