tonight, andy rooney remembers joe wershba. >> rooney: joe wershba, a great and much loved "60 minutesucer, and a good fried of mine, died last saturday. joe was 90 years old. i remember writing this about joe 33 years ago, soon after a fancy party was thrown to celebrate the tenth anniversary of "60 minutes". at the party in 1978, each of the four correspondents at the time said a few words. william paley, the chairman of the board of cbs, spoke, as did countless other cbs executives. don hewitt, the executive producer of "60 minutes," spoke. after all the important people had finished, a spontaneous cry went up from the crowd of 150 people in the room. "wershba! wershba! wershba!" they yelled. joe got to his feet with a smile on his face and got the biggest round of applause of the evening. what had joe wershba done to deserve all this? well, he'd been the best among them at "60 minutes," that's all. and he was for 20 years. television critics and competing broadcasters from other networks have searched for the secret of the success of "60 minutes". some think it's the mix of the cor