Napa Rose is fantastic (hotel @ D-land).
Catal in Downtown Disney is reliable.
Mr. Stox in Anaheim--it's been a while since I've been there though.
The Cellar in Fullerton has new owners (a good thing), used to be very good and was going down hill--maybe it's on the way up.
Park Ave in Stanton is a favorite of mine.
Do report back after you dine!
We celebrated our friends birthday at Agora Churrascaria, the Brazilian BBQ place, and it was pretty fancy and probably the best brazilian BBQ place I've been too. All the meat was very tender, medium rare, and all the sides were very tasty as well. I'm not sure where central OC is though.