BBC R4 has started broadcasting radio adaptions of
So Long, and Thanks for all the Fish, and
Mostly Harmless, as an eight-part series, AFAIK the first four programmes called
Quandary Phase, and the final four
Quintessential Phase. This follows last summer's rather good six-part radio series,
Tertiary Phase.
I have the complete, original first two series on my iPod (and I listened to the whole lot on a trip to London and back at the start of this week!) and also the third, which I recorded from the BBC Listen Again service last year. I am recording Quandary Phase, part 2, right now. But I missed part one.

Somebody, for Zarquon's sake, please help!