Compilation Of Incredible Knife Skills [Watch]

But really...how'd they do that?

I'm not sure if I just wish I had these skills, or it's some weird OCD thing, but watching these people with their incredible knife skills is oddly satisfying. I really found myself just staring at the screen mesmerized, and didn't really snap out of it until the end!

Does anyone know if there's certain techniques to get this good, or is it just practice, practice, practice?