A repost by popular demand: The G-Rated Italian hand gesture chart!
The Italians are famous for being loud, passionate and throwing their hands in the air to show their emotions ( little more than many other cultures).
I believe when you are start understanding and using these cultural expressions you are one step closer to being considered a 'local' traveler.
While I can not take credit for creating this well put together illustration and there are still many more to learn (including the non G-Rates versions), I would still like to pass this on to save you guide book research time during your next trip to Bella Italia.