For the last four years, Outreach Magazine has rated the best outreach materials in many categories (adult, children's, youth, and others). Link. They rate Just Walk across the Room the best overall. I would definitely concur with that. Earlier, I reviewed a number of these resources.
Just Walk Across the Room
The AIDS Crisis
The New Friars
Soul Cravings (reviewed by Lexi Lorentz)
Confessions of a Reformission Rev.