ELF questions answered

[Ñólendil]

Personally I think the Balrog of the movie was grossly large considering the source material (he is a "dark form, of man-shape maybe, yet greater" in The Bridge of Khazad-dum). In The Road Goes Ever On Tolkien says that when the Valar incarnated themselves their forms were "majestic but not gigantic". It's thus quite possible that Morgoth when he fought Fingolfin was merely (if you want to use the word "merely") Troll-sized.

I think it's in Númenórëan Linnear Measurements, an Appendix to The Disaster of the Gladden Fields (where afro-elf, I assume, got his info. about Galadriel), that Tolkien says the average height of the Dunedain before the Fall of Andor, and the High-elves, was seven feet. Males, anyway.