If you are a web designer using the 960.gs you may like this freebie @johnnynines put together: Creates a new Photoshop document, guides to determine grid columns and gutters and to show gutter space Layer Groups for Header, Content, Footer and Backgrounds making it easier to lay your sites out in a orderly manner.
About Brian Hoff: Designer, Writer and Speaker
I’m a graphic designer living in Brooklyn, New York who loves creating compelling and useful websites and memorable interactions across the web. When I’m not designing I can be found writing, speaking and occasionally part-time teaching at colleges — all on the subject of design. I started this blog to share my passion and experiences with designers and clients. I'm most active on Twitter; say hello: Follow @behoff