Character Types - Races

[Crimhthan The Great]

I posted this back in 2007 and I thought I would give it another spin
I am posting it hear since it is about using a rule rather than a house rule.

In Men & Magic the basic character races are listed:

Humans
Dwarves
Elves
Hobbits

Then it goes on to say:

Other Character Types: There is no reason that players cannot be allowed to play as virtually anything, provided they begin relatively weak and work up to the top, i.e., a player wishing to be a Dragon would have to begin as let us say, a "young" one and progress upwards in the usual manner, steps being predetermined by the campaign referee.

I have allowed over 50 and perhaps quite a bit more (I will have to check with my friends on that) creatures to be used by the players as characters.

I would like anyone who has used anything beyond the original standard 4 pc races to post what additional race or races they have used and how they ran them.