To make the shrimp salad: In a medium bowl, combine shrimp, avocado, dill, mayonnaise and salt and pepper to taste. Stir well to combine. Chill until ready to serve.
To make the pasta salad: Combine in a large nonreactive bowl: cooked pasta, tomato, cucumber, onion, cheese, vinegar, mayonnaise, basil, salt, pepper and garlic. Stir gently to combine thoroughly. Chill until ready to serve.
To serve: Split sourdough baguettes and stuff with shrimp salad and garnishes of choice, such as lettuce and tomato. Serve with pasta salad on the side.
Makes: 6