The Tipping Point is an excellent book for sociology wannabes like myself. You get loads of interesting anecdotes and experiments without it every getting too complicated. This is perfect for me and I devoured the book.
The focus of The Tipping Point is social and cultural epidemics (although there's some disease epidemics thrown in, too, mostly for a reference point). How do fads come to be and why do they disappear so suddenly? There's a lot of marketing tips thrown in there, too, which I'm particularly interested in.
Overall, it's a book that gets you thinking in new ways. I feel like I approach the world a little differently after reading it and that's really the best thing we can expect from any book.