Lone Rider by Elspeth Beard
The First British Woman to Motorcycle Around the World
What If? Serious Scientific Answers to Absurd Hypothetical Questions by Randall Munroe
If you have been on the internet for a long enough time, you know the XKCD and Randall Munroe. And he wrote the book. Good one.
Just for Fun: The Story of an Accidental Revolutionary by Linus Torvalds and David Diamond
All my nerdy senses were pleased by this book. I highly recommend it.
A Philosophy of Software Design by John Ousterhout
The must-read for software engineers.
Thinking, Fast and Slow by Daniel Kahneman
Thinking, Fast and Slow - the most useful book you can read.