That was when I got my greatest idea ever.

And what about the greatest ideas of all time?

The greatest idea ever - and it's gone over in a big way!

Maybe you calling that guy wasn't the world's greatest idea.

"That's not the world's greatest idea, but it will have to do for now," Bill said.

It just hit me: the greatest idea of the century.

Well, Sam thought that was the greatest idea he'd ever heard of.

This is the single greatest idea I've ever heard.

Her first and greatest idea was to get out of this room, his private study, with the compromising papers.

I'm not sure it was the greatest idea on earth, between ourselves.