First came Jay-Z and Warren Buffett.

FORBES: From Jay-Z to Sheldon Adelson: Our Covers, Our Message

Warren Buffett, Jay-Z, Arianna Huffington and Bernard Arnaut have had impact, too.

FORBES: Connect

So for the second annual Forbes 400 Summit (last year it was Warren Buffett and Jay-Z) Moskovitz, 27, was eager to hear today's greatest philanthropist pontificate.

FORBES: A COURSE IN GIVING

The photograph of dapper rapper Jay-Z and billionaire investor Warren Buffett (No. 2 on our list) drinking strawberry malts and chatting about business, success and philanthropy with Steve Forbes.

FORBES: Jay-Z Shows Buffett, Rest of the Forbes 400, How to Dress

As managing editor Bruce Upbin says, we gassed up a Gulfstream in early September and brought together the greatest investor ever, Warren Buffett, and one of the greatest recording artists ever, Jay-Z.

FORBES: The Forbes 400: A New Look and Much More

We gassed up a Gulfstream 450 one warm September morning and flew one of the most successful recording artists of all time, Jay-Z, to meet the most successful investor of all time, Warren Buffett, on the latter's home turf of Omaha, Nebraska.

FORBES: Jay-Z, Buffett and Forbes on Success and Giving Back

Shrewd recording artists like Jay-Z are hyperaware of this, as I learned while spending an afternoon with him and Warren Buffett in 2010.

FORBES: Jay-Z: A Lesson On The Power Of Entrepreneurial Capitalism