GMail, Ad-sense and the Don't be evil mantra. This guys seems to have done it all in Google except for the search part.
It's probably not too early to guess that this guy is going to make another big empire in the web world with his own company. I am waiting..

I rather wish they'd have paid more attention to 'Don't be evil' down the road.

who is Sanjeev Singh ? was tis person part of the original team ? This is a new name on my intel list on dev talent!!