Inside Cancer - Multimedia Guide to Cancer Biology
The different aspects of cancer are touched upon through animations, video with narration / sound effects or only slides/audio with doctors and researchers (transcript available).
This site also offers the option of Teacher Center, "to help your students understand how modern molecular and cellular genetics are integrated into ideas about cancer diagnosis, prevention, and treatment." By registering teachers receive access to the Inside Cancer Atomizer, a tool for building custom multimedia presentationswith content from Inside Cancer and other DNALC Internet sites.
Besides that there is also the Inside Cancer Lesson Plan Wiki community at http://teachercenter.insidecancer.org/icwiki/index.php/Main_Page where teachers can view, share and discuss related lesson plans.