I'll start with Oscar, and mention Magic (could play D when he wanted to, and early on had the energy to do everything for 48 minutes).
Probably two of the smartest players, ever.
Bird gets a mention as well.
Jordan will be discussed throughout this thread, I'm sure, but he was different, and we all know that.
Most unstoppable ever was Chamberlain; could go to sleep at the jump and drop 60 or 70 on anybody, anytime.
Averaged 50+ points, 25+ rebounds, and over 48 minutes per game in 1962.
Best little man was Isaiah, I think.
Lots of other people I loved to watch play ball, but that can wait, too.