[Physicist]

I'm chagrined to admit that I haven't yet read The Selfish Gene, but I've read The Blind Watchmaker and Climbing Mount Improbable, and they were superb.

[Nateman]

I haven't yet read The Selfish Gene

It's an important work in and of itself. If you ever heard of the idea of the "meme" (a self replicating bit of information much like a "gene" but normally called an idea) this is where that idea was born. It leads to a whole new way of viewing culture and human thought.