To call this the definitive Shada is probably an oxymoron, but it comes damn close. At any rate it's the most cohesive and polished version. I was worried after Eoin Colfer's fake Douglas Adams book that another fake Douglas Adams book was the last thing we needed, but Gareth Roberts has delivered a take on Douglas Adams that sounds neither like the man himself nor like an inferior copy but rather a well-executed, loving tribute. Any fan of Doctor Who or Douglas Adams ought to check this out.