Now the biggest has been dead for five years. Has there been an even bigger one in the meantime?
No.
For confirmation it is enough to read Gay Taleses report about Muhammad Ali's visit to the Máximo Líder in Havana in 1996.
Ali, obscure behind his Parkinson's mask, didn't say a word the whole time. There was nothing to drink, everyone was uncomfortable. After Fidel Castro asked Ali's fourth wife, Yolanda, if her husband was a good eater, she said yes and the small talk was running out, Ali took the initiative. He pulled a red silk scarf from his left fist, put it back with pointed fingers - and suddenly it was gone. Everyone applauded.
Castro: Where is it? Ali showed him the answer: he had put the cloth into a flesh-colored rubber thumb. Castro: Let me try too. Ali gave Castro the rubber thumb and a companion practiced the trick with him. After a while the Presidente brought it up with verve. Shortly thereafter, Ali fell asleep on a sofa. As he parted, Castro noticed that he was still holding the rubber thumb in his hand. Ali motioned for him to keep him.