Mine has to be the Ham & Fried Egg double decker at a place near me called Blue Ash Chili. They make humongous double decker sammiches and this one is just great! It's not at all healthy with the fried egg, mayo, and cheese but but but but damn is it so good. When I'm looking to go off campus from the regular turkey breast on cracked wheat I'll go for one of these bad boys.
Blue Ash Chili - Article
I went over this way just a couple of weeks ago and was sad to find that the place had changed owners and has a new name. I hope they keep the same format and that ham & fried egg sammich...