Piedmont Grocery was mentioned in the recent thread about places to eat in the vicinity of Kaiser and I thought it was worth its own thread. I haven't been there so often since I moved out of the neighborhood last summer, but in my experience, there is no better place for grocery store takeout. There is a huge range of items, hot, cold, soup, salad, sushi, Indian, etc. It is not particularly cheap, but not as pricey as the rest of the store might lead you to believe. And unlike Andronico's or Safeway, they take the stuff that's past its prime off the shelves or out of the steam table and throw it out, instead of trying to foist it off on the desperate non-cookers among us. (But the store closes at 8 PM, 7 on Sundays, so plan accordingly.) In particular, I commend to your attention the fried chicken, any of the barbecued meats, the tri-tip salad, the duck salad with gigantes, and the samosas. As I recall, they have a few tables in the parking lot in summer if you want to eat on the premises.
4038 Piedmont Avenue in Oakland, large though crowded parking lot, or park across Piedmont in the paid city lot.
I am also partial to the occasional Indian specials at Whole Foods in Berkeley, and to a few things at Andronico's (especially from the Shattuck location) if they're packaged for you at the deli counter -- but beware of the prepackaged stuff -- see above. Safeway teriyaki wings are a guilty pleasure on the rare occasion when I time it so they haven't been burned beyond recognition. They'll still sell them to you anyway.
Where do you find good grocery store takeout?