I like Aldi's, too. I don't buy everything there, but it's great for stocking up on staples. I don't buy a lot of produce there, but I've never had any problems with what I do buy. I don't think it's any worse nutritionally than comparable name brand items. No, it's not organic, but neither is the vast majority of stuff you buy in the supermarket.
My favorites:
coffee, coffee filters
rice
dried beans and lentils
dried fruit
frozen berries
cereals
flour, sugar, nuts, baking supplies
cheese (love that shredded Asiago, mmm)
whole wheat pasta
pasta sauce (I like the slightly more expensive kind with no HFCS)
big containers of pretzels for the kids
bananas, kiwi, strawberries, pineapples, onions
Oh, and their brand of chocolate is to die for.
I also don't buy meat or much in the way of frozen foods, other than plain frozen veggies, fruit and ice cream, all of which is great.
I do hate that you have to pay cash. And as for scary clientele, no store can hold a candle to
Walmart. Shudder.