When I first came to Sicily, in 1992, Giovanna told me that you should always put a halved potato in the pot when cooking pasta. I have done so ever since and my pasta usually turns out fine! I don't know why this works or if it stops the pasta sticking, as I am one of those who puts a teaspoon of olive oil in as well. [Chefs and individual cooks differ over whether or not this is necessary.]
And this week I learned from Linda that the water in which you have cooked your pasta is great for cleaning plates; it gets all the grease off! I suppose it must be the starch that does it.
So there you are: Nisciunu è vecchiu pri 'mpari - Sicilian proverb roughly translated as, "You're never too old to learn".