Dan Hull, author of What about Clients has a good post on his blog entitled "Is Bill Clinton a brand?"
As he says, "Yes, and an increasingly compelling one, according to treatments in both October's The Atlantic and this week's The Economist. With some help from talented Ira Magaziner, a former Clinton White House aide and wonk's wonk, WJC is changing philanthropy to change the world. This also explains why Bill Clinton has still not responded to our help-wanted ad we ran in 2006 to ensnare him as of counsel so he could market for Hull McGuire in the eastern U.S. and Europe. The Bubba's been busy. But, Bill, our offer still stands."
Check the ad, it is pretty good.