Hybrid courses are also known as blended courses or "brick and click" courses. They are a courses that involve both face-to-face instruction and the tools of the Internet. In other words, they combine the best of both worlds.
Blended Learning - from the Distance Education Clearinghouse at the University of Wisconsin. This site contains a variety of links to articles on the topic.
Center for Academic Transformation - this site contains information on how courses can be redesigned to make them more effective academically and save money at the same time.
Articles by Carol Twigg of the Center for Academic Transformation
Implementing the Seven Principles: Technology As Lever - Although this article does not address specically address hybrid courses, the principles discussed in it are appropriate to the use of educational technology modes of teaching.