--------------- playing most frequently
Imperial (Sneaking criminal mainly DB, TG, or warrior(Legionnaire with heavy armor sword and shield) Fighters Guild and the Legion, paladin (knight of the nine), battlemage maybe)
---------------playing from time to time
Nord (Pure warrior either heavy armor or barbarian style in all cases two handed weapons very aggressive playstyle, companion and a true son of Skyrim
)
Breton (Mage, (pure mage mainly maybe battlemage) mages guild FTW.)
--------------playing rarely
Orc (Co's hammer rules
and one of my first characters was an orc battlemage in Oblivion
)
Bosmer (Repect for Legolas, sneking ranger good chartacter)
------------- never played
Dunmer (for the ultimate Daedra worshiper Evil character, serial killer)
Redguard (for the ultimate sellsword and martial artist)
High Elf (enjoy being a racist @sshole)
Argonian( DB all the way)
Khajiit (well, at least I wrote a fan fiction about them that nobody reads
)