Captain Nemo's is my new favorite sandwich place. They've got all the great Chicago classics; like Italian Beef, but also some surprising choices like "Mexican cheese mess". (OK, that's not it's name, but it should be.)
For me, the highlight is the chili. Deeply spicy and thick, I predict it will get me thru the upcoming winter. There's even a vegetarian version, so I don't have to feel quite so guilty when having it.
We stop at the one clear out on Ashland, out where it's known as Clark, not too far past Addison. They have other locations too, but this one has plenty of seating and a handy parking lot.