Are we looking for GOOD italian, or good and cheap places with an italian push? Everything I have heard so far is just good stuff, but not great. Basically carabas would be equal or better than most of them in the list for "true" italian food...
Oblisk downtown is great. Laboritorio in Galileo is also great.
There is a place, cant remember the name, in herndon/chantilly in the same shopping center as the giant, sonoco, and gamestop on FCP. Very good but nowhere near the above two places (think 20pp vs 60pp).
Zeffirelli's in herndon is also quite good. 25-30pp
http://www.zeffirelliristorante.com/about.htm
Maestro if you are looking for AMAZING. Located in the ritz. (150pp) Call a week or so in advance for reservations.
http://www.ritzcarlton.com/hotels/tysons_corner/dining/venues/maestro/default.html
Lucianos in Tysons 1. The pizza is good, but the food is better.
The italian store on lee hwy in arlington has good pizza and some italian "groceries."
There is another italian deli/grocery store in leesburg.
I would not recommend tutu bene in fairfax.
Thats all that comes off the top of my head, but I am sure there are more places.