Greg Howe Slows It Down

Greg Howe slows it down in this lesson to show you a style of playing using the barring technique.

One of the methods that I use to achieve this texture involves the use of partial barreing, which is, quite simply, the idea of flattening the tip of one or more of the fingers of your fretting hand over two or more strings in order to perform high-speed licks with minimal finger motion.
http://www.premierguitar.com/Magazine/Issue/2009/Aug/Punchy_Legato.aspx