Lots of Brazilians rippers, to name a few:
Luan de Oliveira
Nilton Neves
Rodil Ferrugem
Carlos Ribeiro
Alex Carolino
Andre Hiena
TX
Tiago
Formiga
Luiz Apelao
Akira Shiroma
Klaus Bohms
Wilton Souza
My favorite in particular was Akira Shiroma, very creative and has a lot of fun on his board. Formiga is incredible, amazing pop and very consistent, can skate anything. Alex Carolino is incredible to watch as well.
A few Americans...
Gravette
Kimbel
Emile Laurent
Lockwood
Raybourn
Cairo Foster
Mark Scott
Frank Shaw
Monk
Alex Foy
Grant Taylor
Sebo
Josh Falk
Brent Atchley
Tony Ellis
Boserio
Tony and Ben were my favorites by far, Tony skates like a war tank. Emile too, very powerful and fast. Josh Falk impressed me as well.
Edit: Adding Henry Gartland to the list, RIP...saw him skating at that CSS event where they built a miniature of hubba hideout, he was killing it..