1. In a medium pot of boiling salted water, cook the rice until al dente, about 10 minutes. Drain, then rinse in cold water and drain again thoroughly.
2. In a large bowl, combine 1 tablespoon of the oil with the lime juice, fish sauce, sugar and cayenne. Let the dressing stand for 5 minutes, then stir in the rice, scallions, carrots, cucumber and cilantro.
3. Preheat the broiler. Oil a broiler pan or baking sheet. Arrange the salmon fillets on the pan and brush with the remaining 1 tablespoon of oil. Sprinkle with the salt and black pepper. Broil the fillets for about 5 minutes, or until they are just cooked through. Spoon the rice salad onto 4 plates and top with the salmon.
Wine Recommendation: Rieslings are among the most versatile of white wines and among the few that work well with salads. With this Thai-inspired dish, try the 1996 Selbach-Oster Riesling Kabinett from Germany.