Yes, I Read Beowulf in the Old English. Why Do You Ask?

I'm finding the concept of Beowulf, the movie, completely baffling. I'm not alone. (Turns out, there's more than one film, and they pretty much all suck.)

But the part that I'm really trying to get my head around is where Grendel's mother (a monster and all) is played by Angelina Jolie.

Look! She's even wearing monster-issue high heels.