As the resident Italian on this board I feel I must chip in:
Parisi, 4401 Tennyson, would be a very good restaurant even in Italy, contrarily to all those Americanaized pseudo-Italian restaurant mentioned so far.
You may like them, but it ain't real Italian food.
Parisi, and more specifically the downstairs restaurant called "Firenze a tavola" are the only spot, togheter with "Il Fornaio", where I will eat Italian.
Trust me, I'm Italian!