Best kettle cooked potato chip on the market, less than $2. Their peanut butter is better than Jif, Skippy, or Peter Pan, and it's only about $3. Mayo is exactly the same as Hellman's, at less than $4. Great French Bread Pizzas for $3, and you don't have to add more cheese and pepperoni when you get home.
Lots of great chocolates, cheese, snacks, etc. I know someone who has a charcuterie catering biz, and she sources EVERYTHING at Aldi, including the serving trays and utensils.
There's the occasional dud, but almost everything is first rate, and much cheaper.