I know I'll just end up spending over an hour on the character selection screen alone! Even the ability to change a races physical abilities is going to be time consuming! you want them to be just right before committing to the game!
Your avatar is potentially the best thing I've ever seen.
On-topic: race choice is all about aesthetics. No one race is best for any class - it might take a bit more work at the beginning to make, say, an Altmer warrior than to make an Altmer mage, but in the end any race can max out all 18 skills.
I'm going Nord-Argonian-Khajiit-Altmer-Bosmer-Dunmer-Redguard-Orc.