Resources for teaching C to high schoolers?

mctk writes: "I'm a high school teacher who, disappointed with the lack of computer science in school, has promised to teach a few motivated students programming after school. As a enthusiastic novice with three semesters of C under my belt and a few side projects worth of experience, I feel competent yet ignorant. I would really appreciate suggestions for resources on C that are written to be accessible to high school students and contain lots of ideas for activities. Perhaps you've had success with a series of books that spans beginner to advanced? Do you have any activities you would recommend? How would you map a student's first year of coding? I welcome any and all suggestions. And while we're on the subject, is there a brace style that is most standard in the industry?"