We have frequented Casa di Giorgio on numerous occasions and I have yet to order a different entree! Once you find what you love - it's hard to change!
Now that being said, I have tasted other entrees that my family orders while I stick to my favorite (eggplant parmagiana). Casa di Giorgio has a great sampling of Italian dishes and they do taste authentic in comparison to restaurants we've tried in southern Italy. The restaurant constantly offers coupons in the mailers or at Groupon. I'm not sure how they make money since you can always find a "Buy 1 entree get 2nd free" type deals.
The ambiance is cozy and the servers are attentive. Try to go during the early part of the week because weekends tend to be pretty busy and you may need reservations. Overall, it's a restaurant must for Italian food (not fish fry!).