First playthrough will probably be as a Female Nord, sort of a hunter class, using a Bow as primary weapon and either a 2H sword or dual wielding axes as secondary weapon, still deciding.
After that I'll go again with a Dunmer, depending on what they look like in game... He'll be an Assassin-type character.
And I should really dive into a pure mage-type character for once... I never did that, always used magic as secondary skills/utilities. So either an Altmer or Breton. ^_^