We have been shopping at our local Aldi more and more in recent months as we've watched food prices escalate in our town.
As others have said, their produce prices aren't often beaten by other stores. Especially fresh mushrooms (49cents/8 oz. this week), lettuce and broccoli. I also love the low price on their minced garlic in a jar, which I use a lot of.
We are also seeing more and more name brand products there. Most times, it's a "special purchase" and the item isn't regularly carried.
All in all, we find that we can save quite a bit of money by stopping there.