Blind Fury

Notice how Phantom Menace's "slice" is very similar.

Full Metal Yakuza
Best one I've seen yet!

Can't believe no one mentioned Predator 2.

no one even mentioned the one in
"Jason X"...just saw it last night. pretty nice one in that CG world.

The funny thing is why do they keep doing it? Some of them are semi-excusable(laser beams, tiny wires, etc), but the katana slice is just overdone. There's not a thin enough blade in the world to actually pull that stunt off with. A half second delay, tops, and that's only on thick body parts that fit together, mainly the torso. Decapitations should be more like Kill Bill Vol 1, the head should always come off in the process unless the blade is like half a millimeter thick.

Conan the Librarian's head to crotch split in UHF is prolly the best one ever

Team America: World Police