Power Man and Afro Samurai

 My preference for a character's appearance is usually how I first encountered them, so I still have a great fondness for the classic chain belt and tiara look for Power Man.  That said, I can understand the need to update Luke Cage's appearance.  I'm glad Marvel at least still makes sure to usually put him in a yellow shirt, as a nod to the old days.

Afro Samurai and Black Dynamite

A friend of mine loaned me the complete collection of Afro Samurai cartoons a few year back, and I wound up watching the entire run over the course of a weekend.  I loved the character design, over-the-top action sequences and the voice work by Samuel L. Jackson (in both of the lead roles, no less).  I definitely recommend it, especially to Manga fans.