In a 12-inch skillet, brown the ground beef over medium-high heat. Add the taco seasoning and spaghetti sauce and heat to boiling. Reduce heat to low; simmer, uncovered, until most of the liquid evaporates.
Mix the crushed crackers and tortilla chips in a bowl. Place the ground-beef mixture, rice, and remaining ingredients in individual bowls.
Layer the lettuce, crushed crackers/chips, meat mixture, rice, tomatoes, carrots, onions, olives, pepper, celery, cheese, and salsa—in the order you like. There is no wrong way to make a haystack! Serves six.