The Comcast Style Guide which included a brand guide to how the Comcast brand should be treated across mutliple platforms was an immense undertaking. I had to expose the possibilities and limitations across these platforms (set-top boxes, wireless, home phone, web, applications) as a heuristic approach to the Comcast experience.
This style guide was the first and the most important branch from that tree that set the stage for brand strategy. This guide quickly became adopted for the comcast.net redesign and slowly began to influence multiple projects. Pattern libraries, typographical treatments, extended interaction modlels and header branding / deployment were amongst the few (of many) components influencing the Comcast strategy that you will see affect many products to come.
These images are only excerpts from the entire guide.