Reading, but not reading

Inevitably, someone someday will ask you " Have you read book xyz?" and then tell you that you need to read this book because it "changed the game" or is "so far outside the box that it destroyed the box" or something like that. To that I say - it's time to read books via Wikipedia or WikiSummaries. The Wiki is our new Cliff Notes - short summaries of the themes and impact of books (new or old) that can be digested within minutes. Here are a couple I hear about often in my world:

Tipping Point and Blink
Freakanomics
World is Flat

Or for even more depth - check out the chapter summaries at WikiSummaries.org. Here's an example:
Good to Great