Why I like this

There's a few reasons that I like this quite a lot.
They've kept Gently English. I think he's English of Czech extraction in the books, off the top of my head. Adams is very English humour (well, British is probably more correct) and has always had that strong grasp of the surreal that we do so well, like the Mighty Boosh. You hear this stuff and you also think of Monty Python and Blackadder. It's clear the makers of this show understood that link and have kept to the spirit of Adams without bothering to approach the letter, except in the broadest terms of Dirk being a Holistic Detective. I'm 100% fine with that. I hated the BBC version by the way. I was shouting at the telly about that one and switched over after 20 minutes, so it goes without saying I take my Douglas Adams very seriously.
They've done well to get Elijah Wood as the audience go-between who gets whisked off. Like Frodo or Bilbo or Martin Freeman or Arthur Dent. He's a very good actor.
The guy who plays Dirk would make a great Ford Prefect. Unsurprising, they are very similar characters in that they talk disturbingly hilarious rubbish, and are very smug and self-satisfied because they are actually right and often view you, correctly, as cretins. Obviously in saying he would be a good Ford Prefect I'm giving him very high praise.
The English thing. It's a well-established trope that the English are baddies, or if not baddies, then often act all superior and supercilious. I'm English, btw. Now, it's the superior and supercilious (and mysterious, more than a bit Doctor Who, who Adams wrote for back in the day) bit that makes it doubly important Gently stays English, IMO. I don't know if it was brave of the showrunners to stick with that, but I very much appreciate it, given its an American production.
I've seen two episodes so far (I'm watching it with my brother so...) and found it highly amusing. Great work so far chaps!

Worth seeing, but not worth going to see.