Matt whooping up on Galad and Gawyn is still my favorite "small" scene in the entire series.  But since it has already been listed several times, I have one that I am surprised isn't on here yet:

Galad v. Eamon Valda.  For the entire fight, Galad is setting him up for a kill shot, taking multiple wounds to appear like he is losing.

I hate both of Elayne's brothers, but the scene was freakin awesome.

 

So it's NOT the one from Rhuidean. Sorry for asking something that seems so obvious but there was a black hafted spear in Rhuidean then Mat had a spear thats balck hafted and i thought they might have been the same

 

Mat's spear which he calls an ashan'derei (and it's called a Naginata in Japan) was a black hafted weapon from Rhuidean.

 

It isn't from Rhuidean.  Its from the realms of the Finn