My new favorite restaurant, Isole di Sicilia. It's in Trastevere, at the foot of Janiculum Hill, within walking distance of the Vatican.* Everything's good.

*- I didn't think it was that far, but your opinion may vary. If you go, check out Villa Farnesina down the street. It has the coolest staircase you've ever seen in a banker's house. The Raphael ain't shabby, either.