Mr. Google will help you..
I've watch it..
But stop in the middle..
*pouts*

arwen = liv tyler
lord elrond = lord of rivendale
lady galadriel = cate blanchett
haldir, rumil and orophin = the elves that went to help isildur defend the fortress of the rohan. they came from lothlorien the forest where cate blanchett leads.
there are others still i'm just not sure if they were in the lotr series or is it in the hobbit as i left my books at home so i can't check it.
but you might as well:
gil-galan
cirdan
glorfindel
luthien
fingolfin
orodreth
Angrod

i think most of them were part of the nine rings on the side of the elves or is is seven.
i forgot already.

Legolas..? well thats too obvious... I barely remember any elven names from LOTR, how about from eragon?