Not in a movie yet but Elrics Stormbringer.
http://www.rodneymatthews.com/gfx/news/RMStormbringerfull1000.jpg Raven Armoury - Stormbringer.
Lots of lore on this blade including rock songs. BOC recorded "Blackblade" about Stormbringer. Below is a short description of Stormbringer from Wiki.
"This powerful enchanted black blade is a member of a demon race that takes on the form of a sword, and as such is an agent of Chaos. Stormbringer's edge is capable of cutting through virtually any material not protected by potent sorcery, and it can drink the soul from (and thereby kill) an unprotected human upon delivering any wound, even a scratch. Its most distinctive features are that it has a
mind and
will of its own, and that it feeds upon the
souls of those it kills.
Elric loathes the sword but is almost helpless without the
strength and vitality it confers on him.
Stormbringer's hunger for souls is such that it frequently betrays Elric by creating a bloodlust in his mind, turning in his hands and killing friends and lovers. The cursed nature of the sword adds to Elric's guilt and self-loathing even as he feels pleasure when the stolen lifeforce enters his body.
Stormbringer has a "brother" sword named
Mournblade, which was at one time wielded by Elric's cousin and enemy Yyrkoon. It is identical to Stormbringer in most regards. Later stories reveal that there are thousands of identical demons, all taking the form of swords. Three such sibling blades appear in
The Revenge of the Rose and many more "brother blades" are seen in the novel
Stormbringer, but only Mournblade and Stormbringer are named."
