Beautiful Beatdown/Fallout: New Vegas

Beautiful Beatdown is a challenge perk in Fallout: New Vegas.

Effects
Beautiful Beatdown reduces the action point cost for unarmed attacks by 10%.

In order to get this perk, you first have to complete A Fistful of Hollars, which will unlock Destroy Something Not So Beautiful, which in turns rewards you with Beautiful Beatdown. The Old-Tyme Brawler challenge has the same requirements, but will only give you the achievement, not the perk.