Well, I guess I have to up this review to four stars since I can't get enough of Rosati's Italian beef. I have absolutely no idea how authentic it is, but since Rosati's is a Chicago-based chain, I'm guessing it's pretty close to the real deal. Anyway, it's delicious, and the portions are extremely generous for what you pay (although the delivery charge still sucks).
Also, thin crust pizza is the way to go here. It's still pretty greasy, but not as bad as the thicker crusts. The individual-size pizza is pretty big for just one person and at a good price.