Gino's deli is awesome! It's not a truly "authentic" Italian deli, but it's as close as you're going to get in suburban Middleton.
The subs are invariably excellent; the bread is high-quality and the meats are delicious. The cheese tastes mainly of salt but, then again, I've never actually had a sub where the cheese is anything but mediocre. Anyway, you can't go wrong with any of the sub choices. I particularly recommend the Italian beef or the Italian.
The pasta dishes are also great. I've been having the ravioli since I was a kid (and the Middleton Gino's was located on Allen Boulevard) and it's always been a favorite of mine. I also really like the chicken alfredo penne; it's pretty garlicky but absolutely delicious. There are also some cold pasta salads that are worth checking out.
If you have a family to feed, Gino's sells premade pans of meat lasagna (they require 24 hours notice to make vegetarian). It is some of the best lasagna I've ever had. They are very generous with the meat sauce, which is great news for carnivores like me.
Gino's sells a few boxed pastas and some pasta sauces as well. The selection is similar to what you'd find at a grocery store with only a few interesting products, so it's not worth coming here just to check out the grocery. However, if you're just here to pick up some lunch, it could be worth your while to pick up a few other things too; the prices for everything are pretty reasonable, and the discount you get for paying with cash makes it even better.
If you are the Middleton area (or even if you aren't) you should make it a point to check out this place.