Out of all the breakfast diners in Madison, this is my favorite. The food totally does it for me. The venue itself is a little divey and the service was okay, but I'd go there again and again for one of those massive fluffy omelettes and some pancakes. Yes, plz.
While I have only been to this OPH once, the location in Minneapolis that I usually go to has great crepes, apple pancakes, etc. I haven't had anything I didn't care for, and I can tell the Madison location is no different.
Just beware, there's usually a wait unless there's a football game going on, so go early and maybe call before you plan to leave. I'm drooling... Looking forward to next time.