I am a huge Aldi's fan! I grew up shopping at Aldi's, so that helps--fond memories of racing down the aisles in the cart with my dad and collecting empty boxes to take hom the groceries in (did anyone mention you have to buy your grocery bags? I try to remember to bring a few). Shh - I also used to run along the counter where you pack your groceries, back in the day before they had all those warning signs!
Another aside: Aldi's is a German company, so you can get some great German items that would normally cost an arm and a leg at a specialty store. They have good chocolate year round, but come out with noodles, white asparagus, and other special goodies occasionally.
I do just about all of my shopping at Aldi's. Fortunately, I can walk there in about 10-15 minutes. I maybe go to the big-name grocery store chain once a month (often every other month). Back to Aldi's. Here is a sampling of what I buy:
Raisin bran, triple berry toasted Os, chocolate chips, cake mix, frosting, brownie mix, baking soda, flour, sugar, salt, olive oil, corn oil, canola oil, salt/pepper grinders, artichokes, black olives, green olives, maraschino cherries, hot chocolate mix, chocolate syrup, mustard, ketchup, pickles, milk, eggs, cheese (lots of kinds), fresh oj, half & half, lunchmeat, tortillas, sour cream, cream cheese, bread, brown rice, pasta, tuna, all sorts of canned veggies and fruit (love the tomoato products and the potatoes), spaghetti sauce, parmesan cheese, all ziploc baggies, plastic wrap, foil, etc., garbage bags, kleenex, toilet paper, paper towels, q-tips, shampoo, conditioner, body wash, body lotion, vitamins, toothbrushes and toothpaste, baby wipes, carrots, celery, potatoes, onions, grapes, grapefruit, lemons, limes, cranberry juice, frozen chicken tenderlons, frozen ground beef, frozen oj, frozen veggies, chocolate, Tyson chickens (the kind you microwave), spiral-sliced ham, peanuts, raisins, cooking spray, peanut butter, jam, vinegar, bullion, multi-colored peppers, zucchini.
There are also a lot of snack items such as chips and "little debbie"-style treats. I haven't tried most of thier frozen items. I also don't care for their deodorant or mayonnaise.
Have fun at the Aldi's! I think the best part is taking your receipt to the big-name grocery store, comparison shopping, and seeing how much you saved!