Preheat the broiler and position a rack 6 inches from the heat. In a medium ovenproof skillet, heat 1/4 cup of the olive oil. Add the garlic and cook over moderately high heat until fragrant, about 30 seconds. Stir in the shrimp and tomatoes, season lightly with salt and pepper and cook until the shrimp just begin to curl, about 1 minute. Remove the skillet from the heat.