Cook rice as package directs. Preheat broiler. Sprinkle salmon on both sides with salt and pepper. Broil fish until done the way you like it, about 6 minutes for medium.
Divide rice among 4 serving bowls. Lay a piece of salmon on each. Top each serving with cucumber, avocado, nori, onions, and sesame seeds.
Mix soy, wasabi, and oil in a small bowl and serve with the salmon and rice.
Note: Nutritional analysis is per serving with 1 tbsp. sauce.