There is no denying that relativity is not a subject that most of us need to understand. I'm not sure if it's something that most of can even begin to understand whether we need to or not. That said 'Why Does E=MC2 and Why Should We Care' goes some way to making sense of the subject for the layman using real life examples and simple mathematical explanations. Read by one of the authors, Professor Jeff Forshaw, the narration is authoritative without patronising the listener. I didn't think I would enjoy this as much as I did but it was a really good listen and I am happy to give it 5 stars.
A lucid exposition of the ideas facing physicists and theorists of today, Michio Kaku's exposition is sublime, something you can listen to over and over again.