I found a link to the Apple’s “Human Interface Guidelines” and wanted to share the wealth. From what I can tell the document is aimed at potential 3rd party software developers who are designing for the Mac OS, but absolutely useful for multimedia folks! The first part of the document covers “The Design Process”, “Characteristics of Great Software”, “Human Interface Design” and “Prioritizing Design Decisions”. Theres also some cool information on icon design, window layout etc. I fully recommend checking it out.