First of all, a beautiful video set to Megurine Luka's Mujou. Mouri Motonari of Sengoku Basara performs a sword dance. As Mouri's weapon is so unusual, the care taken to properly accommodate this in his movements makes the video especially delightful.
This clip was originally posted a few days ago but the user has made some refinements. It's not Miku Miku Dance; instead it's a comparison video showing Sengoku Basara characters next to the famous armour their original historical counterpart is associated with. A side by side view makes it easier to appreciate the way the unique designs from real life were incorporated into the exaggerated Sengoku Basara character costumes.