Yeah, Cantona and Keano caught my attention for varying reasons, but Robson was there first showing how to play for the Man U shirt. I know significant people came before, but I didn't see them.
In snooker there have been entertainers like Alex Higgins and Jimmy White who had at least as many fans as Ronnie, but the latter has to be number one for the combination of entertainment and skill. My favourite however has to be Steve Davis, for being so consistently good that he bores you with his skill.