Since Jill asked...
A fire nearly destroyed Junior's in 1981, and distraught Brooklynites gathered at the catastrophe screaming, "Save the cheesecake! Save the cheesecake!" They couldn't, sadly. But they saved the recipe, and today, Junior's Cheesecake can still be bought at the original location, in Grand Central Terminal, off Times Square, and in the lobby of the MGM Grand in Las Vegas.
And, you can buy it right here, on-line (their new Carrot Cheesecake is Jeff's favorite):