Chameleon Template from Underdark is +1, gives a +10 racial bonus to Hide checks, +4 to Move Silently, climb speed equal to 1/2 fastest non-flying speed (if only flying, the climb speed of 10 ft), and 10ft reach on touch attacks only. Not bad for a stealthy character.
wraithstrike?
To be a little more specific, it's a tongue with 10 foot reach that can be used to deliver touch attacks. Sorry, but I think Wraithstrike is a no-go.
Stormgaurd Warrior might have some fun, though...
source of stormguard warrior?
tome of battle, it's a tactical feat. for each attack you forgo in a round, you can make a touch attack. each touch attack that lands gives you +5 damage vs that foe in the next round, and the next round only.
ok, know what?
this mental image is disturbing.
PC: I shall initiate my ultimate attack sequence! AVALANCHE OF BLADES!
-licklicklickslurpslrplililillearch-
opponent: I-...I feel violated....
PC: belt of battle! TIME STANDS STILL!
lililrishprshlkcsplurtsquechslouoorp
opponent: PLEASE JUST KILL ME ALREADY!
next roundPC: daimond nightmare blade!
opponent: thank the gods!