Originally posted by Hypersmurf It doesn't - you could use a halfspear, a trident, a morningstar, or - my favourite - a heavy pick...
Okay, but that's my point exactly. Rapier, Trident, Morningstar, Pick... these are all very different weapons, each wielded in an entirely different manner, and yet all of them work for this ability simply because they do piercing damage. (Also, doesn't it explicitly say "one-handed weapon"? I'd think that'd rule out tridents, although I'm not sure what size they are in the 3.5E lists)
On the other hand, a Longsword, Glaive, Mace, and Handaxe don't work. A Mace and a Morningstar are far more similar than a Morningstar is to Picks/Tridents/Rapiers, and you can use similar logic for the other pairings. My point was, it seems like a somewhat nonsensical limitation. The type of damage the weapon does has very little to do with how the weapon is wielded, so why should a finesse-based class be limited only to piercing weapons for its best ability?
I'd suggest one of two changes:
1> Let any one-handed melee weapon work.
2> All weapons benefiting from Weapon Finesse work, no matter how many hands they use.
Either way would be an improvement, IMO.
. An it stacks with sneak attack. I've got mixed feelings ( front loading versus more power now! 
