Come on!!! We know we want to talk about it. The best frakking sci-fi comedy series ever. Whaddaya say?
So, the radio series? The TV series? The play? The movie?
The books, definitely. Most assuredly not the movie.
I didn’t think the movie was that bad, I mean Arthur Dent actually gets the girl.
Oh, yeah, I’m in. I just need an excuse to read it again. 
I’d see no reason not to approach this the same way we’re approaching Star Wars – look at and enjoy the whole universe: in this case, original radio shows, radio show scripts, books, theatrical play, TV show, and movie. Fun stuff!