It took me a second to figure out what this post was about..

Here's the Info:

Desert Island Discs is one of Radio 4's most popular and enduring programmes. Created by Roy Plomley in 1942, the format is simple: each week a guest is invited by Sue Lawley to choose the eight records they would take with them to a desert island.

The discussion of their choice is a device for them to review their life. They also choose a favourite book (excluding the Bible or other religious work and Shakespeare - these already await the "castaway") and a luxury which must be inanimate and have no practical use.