If something is new and improved, we say it is the best thing since sliced bread.

VOA: special.2011.02.20

Could the data have told you that Gotye was all of a sudden going to be the biggest thing since sliced bread?

FORBES: Using Data To Find The Next Gotye

"I thought this was the greatest thing since sliced bread, " he says.

WSJ: Starting a Business Later in Life

The lake is where you will find the Chateau Lake Louise, which, depending upon your opinion, is the best thing since sliced bread or a lump of human intervention dropped into paradise.

BBC: The natural wonders of Banff and Jasper National Parks