Capellini napolitano was one of my favorite pastas when I was in Italy. Napolitano is a tomato based pasta sauce that sometimes just has herbs and sometimes is made with different vegetables like carrots, peas and celery. I like it both ways.
It's very delicious on capellini pasta. I completely agree that thinner pastas absorb sauces better and are more flavorful for that reason. Capellini seems to do that really well. It also makes for a nice light meal with salad.