Dinner tonight - Long Beach/OC area
So many choices and many within the city limits. If you do a search, you will find much, but just to help start you out...
Italian: Finbars, Cafe Gazelle, Ferraro's, and Il Parrolaccio
BBQ: Beachwood BBQ in Seal Beach on Main
Greek: George's (2 locations) also Cafe Ambrosia
Middle Eastern and similar: Open Sesame, Magic Lamp and Sunin
If you give a little more detail on what you would like, that would be most helpful.