Pros
Google offer an amazing work environment, with unbelievable perks. People around you are very smart Whatever you do in Google, you are probably working on (or supporting) an innovative product and having a quite large impact. Things move at a very fast pace. The speed is really one of a startup. Organized chaos is how I should describe Google. A chaos that magically works It is a relatively flat organization. While there is a well defined chain of command in every function, the individual are still empowered to work cross-functionally and take initiative.
Cons
It is getting a little bit too political in Google, which I guess is only natural for 40K company. PMs tend to take a bit too much credit for everything around, Engineering are very isolated (maybe by design) from operation/monetization aspects. Other functions are secondary to PM and Engineering in almost every aspect. Vision is increasingly a top-down thing with less and less grass root initiatives .......... working on your 20% these days mean your bonus will probably disappear because you need your manager sign-off, which likely has a different agenda, and his own 20%