Max 7. The best place on the web for free teaching resources (video, audio, teaching notes etc) is Max 7 . . .
ReelIssues. This comes from the Bible Society. Free downloads of teaching notes that work with clips from particular films, all you have to do is book out the film and set a date for your group.
Christian Youth Work Training. This site, run by David Howell, is the one stop shop if you are looking for training in Christian Youth Work.
Church Lads and Church Girls Brigade. This is an Anglican youth organisation that welcomes children and young people of all faiths and none. It has a highly regarded set of programmes geared to various age groups - their interests, needs and stages of development.