Wow...I'm impressed by all these people speaking Italian (BTW, Rachel, if you want to increase your possibilities to insult people in Italian, don't hesitate to seek my advice! ;) )
As for me, like most Italians foreign languages aren't my strong point...apart from a fair Italian, I can speak the poor English you can see, read and understand pretty easily French and Spanish (but if I have to communicate with a French or a Spanish I prefer speaking English). Ah! I can read a menu and order food in all the main existing languages :D
Can also understand and partially speak Genovese and Cremonese dialects;)
BTW...there is a question that intrigues me. Every Italian region has its own dialect, and they're so different the one from the other that you can consider them separate languages (I mean that, in example, Genovese is so different from Italian to be almost unintelligible for a non-ligurian, not only when it's spoken but also when it's written). So, I wonder whether is the same for the other countries!
Athenaeus: how curious, in Italy Ladino is the language spoken in a number of valleys in the Dolomites. It's very ancient, directly coming from Latin, and it's one of the three official languages of Trentino-Alto Adige (the other two are Italian and German). I never heard about its relation with Jews, so I wonder if it's the same of the Ladino you mentioned, or something totally different...