precious moloi-motsepe, entrepreneur sara blakely, and a.o.l. founder steve case, and his wife jean. when did you first hear of the giving pledge? >> jean case: melinda called and talked to us. but we had the benefit of knowing bill and melinda for a long time, going back to our technology roots. >> steve case: we competed against them for many years. >> jean case: we did. >> steve case: and we're happy to finally join forces. >> rose: you wanted to be on their side. >> steve case: yeah, yeah, we wanted to be on the... aligned. >> rose: they've all signed the same pledge, and they bring the same brashness to their philanthropic ambition that helped them build financial empires. >> pete peterson: charlie, this is a group made up largely of entrepreneurs. and they didn't make a billion dollars or $billion by doing the ordinary; they did it by >> rose: that's certainly true for sara blakely. >> sara blakely: well, i made all the money by making other people's butts look a lot better. >> rose: i think you've missed me. in 2000, she took $5,000 in sa

blake-morgan has the story. sarah: spend just a few minutes with peter setzer, and you'll quickly learn where his his allegiance lies. peter setzer: i love cam newton with his exuberance. sara this is the man who loves : the carolina panthers. peter setzer: i read everything that the charlotte observer writes about the panthers. sarah: setzer doesn't just read them, he cuts them out. taping the printed paper to the back of his bedroom door. peter setzer: here is cam in action. fantastic. sarah: setzer reads these articles over and over again, because if he doesn't, he'll forget. peter setzer: about a year ago, alzheimer's and of course that was a blow. sarah: setzer's alzheimer's is in its early stages. he hopes to keep it that way. peter setzer: the average person who's diagnosed with alzheimer's will die in 11 years, and my determination is to slow that down. sarah: the former pastor has a list of things he does every day to slow the disease down. >> about a hour of brain games. sarah: his favorite is pouring over panther stats with his grandson. peter setzer: i'm going to go down fighting and do everything i can to prolong life. >> my hope is he will always remember to c