Il Pastaio is a very charm Italian restaurant here in Beverly Hills. Part of a group of cool restaurants in the neighborhood, Il Pastaio is famous and very popular (reserve when the group is large or peak day/hour).
The dishes are delicious, the atmosphere is quite nice (especially if you sit at tables on the sidewalk), and you might bump into some celebrities!
The price is a little higher than normal but still affordable (the menu with prices is available on the restaurant's website).
If you are in more than two people or hungry, ask for the Antipasto Casereccio, a cold dish with hams, eggplant, bruschetta, etc, that serves two people.
I've tried various pasta dishes on the menu and it is difficult to ask for something not so good. For dessert, the Tiramisu, the Pana Cota and Apple Tartare are great!