Business (in no particular order)
Reinventing Organizations by Frederic Laloux
Originals: How Non-Conformists Move The World by Adam Grant
Playing To Win: How Strategy Really Works by AG Lafley, Roger Martin, & LJ Ganser
Let My People Go Surfing by Yvon Chouinard
Permission Marketing: Turning Strangers Into Friends and Friends Into Customers by Seth Godin
The Go-Giver: A Little Story About A Powerful Business Idea by Bob Burg & John David Mann
Design (in no particular order)
Don't Make Me Think: A Common Sense Approach To Web Usability by Steve Krug