Radio is the theater of the mind. You don't need to watch TV or a movie, you close your eyes and imagine what you're seeing.
Here is a radio show called Crimes Against Music: Journey to the Center of Rick Wakeman.
It's a spoof on prog rock - concept albums like Jeff Wayne's War of the Worlds, etc.
Stars English singer-comic Mitch Benn, with a guest-star turn by Benn's friend, Rick Wakeman (keyboardist for Yes before making it big on his own.)
A lot of the early humor is very British humor, very topical (Alan Tichmarsh is a gardening host, yet here he is the Prime Minister of England, the Oracle is a palm computer (page loading...while they're waiting for news on what to do) but it really picks up when the Fellowship are shrunk and sent into Wakeman's brain in an attempt to save him.