You’ll find a wide variety of cuisine all over Los Angeles [1] and its surrounding towns. Whatever kind of food you prefer, from fresh sushi to Armenian, you can probably find it in a cool little hole-in-the-wall somewhere in L.A.
Local recommendations often make for the best dining experiences, but even just walking down the right street can yield a tasty meal.
Links:
[1] http://www.moon.com/destinations/california/los-angeles-and-orange-county