I have two:
The Orine: The Orine are a race fashioned by the gods from avian stock. They are accounted among the seven free peoples, being granted the gift to worship however and whoever they please. They appear to be tall comely well-formed humanoids, with two eye-lids - the inner one is black. Their hair is is made of fine thin feathers, which vary from white and black down on their bodies, to in the males, full manes of brightly colored plummage. They are a sensual race, much given to carnal pleasures, strong drink, dancing all night long, rythmic music, and bloody feasts of rare roasted flesh. There nickname is the 'crazy people', because their strong emotions frequently get the better of them. They hold grudges strongly, forgive easily, go to blows without thinking, and go to intimacy just as fast (in no small part perhaps because they are not especially fecund with respect to mammalian races, though the two find each other mutually attractive.) They have never built an enduring civilization, but do not mind. They have participated in the destruction of several civilizations, for which they do not apologize. They remain a nomadic people, building no buildings except those that they can put on wheels and haul from place to place with the help of mammoths. They go into battle singing in great choirs on the backs of bellowing domesticated aurocks which have been bred for war. They love the hunt and war equally, and can be struck motionless by the sight or sound of great beauty. (Just for the record, since the question aparantly does come up, females don't have mammary glands, though their comparitively large pectorals make them look something like somewhat flatchested women of other races.)
The Idreth: Also called 'the born old', because the are born with the memory of their whole race and are capable of speaking fluently as infants within days of being born. By the time they are toddlers, they have long grey hair. By the time they are entering adolescence, their backs begin to hunch which causes them to lope with a stooped swaying posture. By adulthood, they are full hunchbacks. They would otherwise be quite tall - taller than even the Orine. They have very large features that cram onto their thin wrinkled faces - large blue, green, or purple eyes, large drooping mouths, round saucer like ears, and noses that look like you could split wood with them. They are thin and frail, but are surprisingly strong and many fighter has gone down because they have forgotten the extent of their reach. They favor staffs, both for aiding their walking and fighting. They are accounted among the free peoples, but are not especially religious save in the reverence of a few goods of knowledge and wisdom. They are unparalleled loremasters, feared masters of the arcane, and as explorers are rivaled only by Humans. Like the Orine, they have never built a true civilization, but unlike the Orine and like Dwarves and Humans they are a truly cosmopolitan race and may be found almost anywhere. They are greatly desired by human noblity to serve as advisors and stewerts. Idreth almost always spend their youth travelling, and seeking a lifemate. They are almost invariably chaste and are intencely loyal to their spouse. Adultery is all but unknown, and many voluntarily choose death if their spouse dies. When they have offspring, they cease their worldly ways and retire to a monastic life to raise a family. These abbeys and observatories and the land immediately surrounding them are the closest things that Idreth have a to country. They are often in remote places on high, rocky and otherwise worthless land, often within the bounds of land claimed by goblins or dwarves. Despite their dour appearance, Idreth are affable, gentle and good natured - using tact, humilty, and charm to move among almost any race peacefully. They are particularly fond of, and are particularly liked in return by, fey creatures and often renew thousand year old friendships held by one of their ancestors with these eternal creatures. The Idreth almost never go to war, and generally remain stoicly neutral with regards to conflicts among the other free peoples. On rare occasions, one abbey will single out another abbey for censure, and these activities can break out into something like a war but such events generally occur far from the eyes of any other of the free peoples. It is often said that however friendly an Idreth may appear to be, noone but another Idreth can ever truly know them. There remains always beneath the surface, an inner core which is impentrable, aloof, detached, and enigmatic. For this reason, Idreth are popular targets for conspiracy theories, and occassionally are the targets of purges and persecution by other races. The Idreth however, rarely if ever fight back, save in immediate personal self-defence, prefering to fall back to their abbey fortresses to wait out the seige.