Favorite Hobbit - Bilbo
Favorite Human - Aragorn
Favorite Elf - Legolas
Favorite Dwarf - Thorin
Favorite Orc - Azog and Lurtz (Saruman's Uruk-hai are my favorite of the orc races). I'm not sure I can pick which one of these two I like better. They are both great adversaries.
Favorite Wizard - if I have to pick one, Gandalf...