Wilt was definitely a very special talent. Unfortunately back in those days not many games were televised but they always had the NBA on Sunday mornings and because of the huge rivalry between Boston and Philly they were on TV more often than most. I was a huge Sixers fan growing up before the Blazers existed so I made sure I caught those televised games.
Cavs wouldn't have made it past Indy, or possibly even made the playoffs without Lebron. Certainly wouldn't be up 2-0 right now if he didn't go super Sayan in these first two games.
Kareem, the silent structure of the 70s and 80s. Until Chuck Daly changed the dominant playing style. Then Stern Europeanized it.