I read two books lately that I strongly recommend. They are both far away from all the LD material that we're used to here.

1. Tibetan Dream Yoga
2.Carlos Castaneda - The Art of Dreaming

Tibetan Dream Yoga puts a Bon Buddhist spin on the whole thing which I personally found very interesting. I can't say I've followed through with the techniques, but well worth a read.

The Art of Dreaming is a more fictional read but incredibly interesting and full of crazily thought provoking material.

Both are available for cheap on amazon