I was planning on playing with each of the races one at a time this game, I've never played a serious game as a Nord or Altmer yet so probably those first.
Orc. Because now axes aren't going to be the sub par brother to Blunt weapns, and I can go and slash people's faces off with an axe and be a total raging berserker McKillinator.
I'm leaning towards argonian since they made good thief/assassins in oblivion but I'll end up making multiple characters with different races in the end.
My first (warrior) character is always an Argonian (has been since Daggerfall). Lizardmen are just so unique and awesome. I wish more RPGs had that option.
I'll probably port my Oblivion character. IE the Imperial Thief, when you train them to learn invisibilty/chameleon skillls, it's the best thing you could ever hope for as a thief.
Nord is my favorite and that's what I'm gonna play with. They're fairly strong, don't have any weaknesses, and have the correct role in the video game's story I believe.