Hand-To-Hand (3.5e Feat)
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 Hand-to-Hand [General]
Weapons? Who needs weapons?
Prerequisite: Improved Unarmed Strike
Benefit: Your unarmed strikes do 1d6 instead of their normal die. If your unarmed strikes already do 1d6 (or more) they instead increase the damage dice by by one category (per the table in the attack description).
Normal: Your unarmed attacks do their normal damage.
Special: If you possess the Two-Weapon Fighting feat, you may attack twice with your fists per turn as though wielding two weapons.