They call him Billy "The Croc" Argyros. Looking at the collection of tchotchkes he has with him at today's final table, it's easy to see why. On the rail by his left elbow, Argyros has placed two stuffed animal crocodiles (one a pea green, the other a lush green) and a small rubber crocodile. A miniature crocodile figurine and a crystal crocodile sit atop his chip stack, and Argyros' head is covered by a green cap sewn to look like a crocodile head, complete with gaping maw.