Place tortillas in shallow pan. Spread salsa over them to soften them. Let sit for 5 minutes. Turn tortiallas over & coat the other side.
While the tortillas are softening, heat oil in a skillet & saute onion for 3 minutes, stirring frequently. Add garlic, eggplant, zucchini & sherry if using. Cook, stirring often, for 5 minutes or so, till eggplant begins to stick. Remove from heat & stir in chilies.
Pre-heat oven to 400F. Lightly oil a baking tin. Remove each tortilla from the sauce & fill with one quarter of the sauteed vegetables. Roll up tortillas & place seam side down in baking tin. Top with the rest of the sauce & cilantro. Bake for 15 minutes, until evenly browned.