I am assuming you mean San Diego? What kind of food are you looking for, and can you be more specific about the area you're interested in? The East County covers quite a large swath of ground - from La Mesa all the way out to Alpine.
That being said, here are a few ideas:
Antica Trattoria in La Mesa, www.anticatrattoria.com
La Trattoria in Santee
Taka Sushi in La Mesa
D.Z. Akins - it has its detractors though
The Beef n' Bun - a burger stand on Fletcher Parkway - good shakes!
Gaetano's Pizza in Casa de Oro
Sarita's Taco Shop in Casa de Oro
Panera Bakery in Grossmont Center for sandwiches and pastries.
Ranas.com - Mexico City Cuisine, also in Casa de Oro
Janet's Cafe - in Rancho San Diego and I think a couple of other locations
Chef Axel German food in La Mesa
(those last three I have not tried)
There is also a Gaetano's in Lakeside, on Old Hwy. 8. My son tells me there's a little place called Cafe 67 at 67 and Mapleview that serves up a good breakfast. I believe they're only open for breakfast and lunch, however. The Bread Basket used to be alot better before the original owners sold it. They still make decent baked goods, but we usually get them from the bakery to go. My friend lives in Alpine, and likes Donato's for Italian, though I've never tried it. Kind of a culinary wasteland out there.
Shizuoka Japanese in the mall with the Souplantation and Michael's on Fletcher Parkway.
Oiishi: Japanese, Thai and Sushi on Mast in Santee. Fresh and excellent.
Greek Style chicken at 67 and Prospect exit.
Senor Taquito on Bradly just East of 67 next to the 7-11 is an absolute hole in the wall taco shop that makes their corn tortillas fresh and also some great mulitas. Depending on your craving, I could list about 10 different taco shops and their specialties...ceviche, mashed potato tacos...
Best ones are at Buenos Dias, on Jackson just south of the 8, across from the Honey Baked Ham and Taco Bell...sort of around the corner from that Ralphs at Grossmont. It shares the same parking lot as a Laundromat.
Trust me. I *have* tried them all.
Oh, and Buenos Dias is open 24/7. You have to only use the drive thru after a certain hour instead of walking up.