I prefer the way the podcast is at the moment in that they give advance notice that they will spoil a movie and to listen on if you want to hear it or fast forward if you don't. Most tv & radio shows don't have that option as there isn't a fast forward option for tv and radio.
Perhaps if time persists they could do 2 versions of the same episode, one which is talking about the film in full and edit the full episode into a shorter one thats spoiler free. People can then choose which they want to hear.
There are other podcasts out there that talk about films in full if thats what you're looking for. One is the Greatest Movie Ever Podcast http://gmepodcast.com/