How do I get a knife "scary sharp"?

I am pretty good at sharpening my knives. However No matter how hard I try I cant get them "Scary Sharp" to the point where I can shave the hair of my arm. I am using a Norton sharpening stone with both coarse and fine grit the finishing off with 600 grit sand paper and a leather strop. Are there any better tools to use. Also how to I get a Mirror Polish on my knives. If there is anyone who can share some light that would be great.