Writing Teachers Gather Round

I know a lot of my flist is in academia, and zulu and I have been talking about teaching and teaching writing specifically, and I decided to host a post about teaching writing.

So, if you teach or have taught writing at any age level, what are some of the strategies you use? Specific assignments? General thoughts about writing instruction?

If you have ever been a student of writing, what are some things your teachers did that worked? Failed abysmally? General thoughts about learning/teaching writing?

Recs for books, essays, or websites also appreciated.

Please feel free to share this around.

I'll put my thoughts in comments rather than the top-level post.