What would be a cool and interesting last name?

I want to change my last name but I'm not entirely sure what I want to change it to. I have a few ideas but I'd like some more suggestions. I'm looking for something cool and unique. I saw some one with the last name Heartache and I thought that was cool and unusual but not really strange or hard to pronounce, I also like some Germanic last names since I'm of German heritage. Does anyone know of some cool last names that are either unusual or germanic?