This is about a month old but search revealed nothing so..
Found out that the BBC has done an adaption of the "other" Douglas Adam's series Dirk Gently. This is apparently a pilot for a possible series. While the reviews are not stellar (7'ish /10) most of the complaints seam to stem from the simplification of the plots used from the 1st book ( Dirk Gently's Holistic Detective Agency). I quite enjoyed the books, perhaps even more than Hitchhickers, so hopefully it should still be a good show to watch*.
Finally got around to watching this. Thought it was pretty average. The "pilot" or whatever it is deviates massively from the original book. As much as I like the actor that plays Dirk, I didn't think he was right for the role.
There were a lot of cool little shoutouts to people that had read the book - things like "The Electric Monk" scribbled on Dirk's wall - but overall probably wouldn't go out of my way to watch more, unfortunately. There just wasn't enough of the humour captured - it simply wasn't funny enough. I think it will just end up being a curious detective show.