The giving treat
The Hollywood Diner near Omaha's airport was the restaurant of choice for Warren Buffett and Bill Gates: two of the richest men in the world -- planning the world's most audacious philanthropy drive.

Buffett, by the way, paid for lunch.
For the full story, see The $600 billion challenge.
NEXT: Photos from The $600 billion challenge
Last updated June 16 2010: 2:06 PM ET
