Are you saying "Just Do It" is copyrighted? Are you sure you don't mean trademarked? Because if "Just Do It" is a copyrightable work, then things are far more f...ed up than I thought.
See, I committed prima facie infringement twice here. Hopefully I can argue fair use when I get sued, but I'm not sure I can affort the lawyer. You should worry, too, bonsaitree, as you infringed on at least 4 works in your post.