Ok, I'm a Night Elf Druid. At around 12th level I went to Darnassus and decided to pickup a new weapon skill -- only 1 was "trainable" from the weapons trainer -- Hand to Hand.
Ok, now I have this skill... Need a weapon right?
Weapon vendor there -- about 2nd or 3rd page -- sells brass knuckles so I bought 1 (for primary hand -- can't dual wield so couldn't get one for off hand).
Well you hit FAST! I don't mean fast, I mean FAST!
I could keep up and out pace hits from the cats around the area there and skilling up... maxed it real quick.
The DPS rate from it and it's overall damage don't look so hot but I know I used a much more powerful staff for a while there and I got beat up a lot more with it than these brass knuckles...
Next I'm going to pick up a dagger for fun and see what happens.