I had the No.4 Decker sandwich ($17), while my friend had the Instant Heart ATtack ($17).
Before the food arrived, we were served Jewish dill pickles (which weren't too sweet, but were just right and totally crisp) and a coleslaw-like pickled cabbage thing that had no milky dressing but was slightly sweet tasting.
The No.4 came, looking about six inches high, and my arteries trembled in fear as I gazed upon this tall monstrosity. In between the thin slices of Jewish deli rye bread, the "sandwich" had hot pastrami, corned beef and chicken salami in between. Somehow, I managed to actually eat the damned thing altogether without getting a locked jaw, but boy, it was good: pastrami was flavourful,and tender, and blended in with the corned beef and chicken salami to make a flavourful sandwich that was also extremely filling.
The Instant Heart Attack consisted of a "sandwich" made from fried potato pancakes instead of bread, with pastrami in between. It was, ironically, less filling than the No.4, and in my opinion, less likely to cause a heart attack than the No.4. It too, was flavourful and good.
Come to think of it, maybe they should rename the No.4 "Instant Asphyxiation".
All in all, it's definitely worth revisiting.