I haven't seen the film, but I'm a fan of the radio show. This show is so much more entertaining (to me) than so much else on radio today. Much of radio makes no pretense at having a format, but fills in time between comercials. There are far too few radio plays and story-tellers available today. I'm an old fart, and recall fondly sitting in front of the radio listening to this type of entertainment regularly.
Canada's CBC used to be a good source for this type of radio, but I've seen a drop off in the quality of programming here too.