Races I know I'd be interested in playing:
- Centaurs (provided that there wouldn't be issues of fitting into dungeons, at least most of the time)
- Insect-Men/Phraints/Formians (provided they had feelings)
- Some type of bird-man
- Young, low-level but intelligent dragons (I would especially enjoy taking a dragon from first level all the way through an end-game)
- Mushroom Men/Shrooms/Myconids
- Leprechauns or some other probably non-flying fey of that size
- Giant (probably in a wilderness phase of a campaign)
Another interesting question: a good while back, Noisms posted this article about how non-human races should have something about their psychology or culture different from human psychologies and cultures. In the article, Noisms links to a list of elements of psychology and culture that are universal to humans and suggests that a few of these should be changed for non-human races. I think this is a handy way to let players know a way to play their non-human PCs; it takes the responsibility for policing it away from the referee and players tend to take kernels of ideas like this and run with them in fun and unexpected ways.
Which of these human universals would you take away from some of these races to make them more interesting?