Apparently, to some MC design critics, "of all time" means the last thirty years of the motorcycle's 110+ year history.
As with most dimwits, history began on the day they were born.
And within that short span, the fact that he singled-out the Honda 'Magna' (which admitedly isn't the prettiest machine out there), and either disregarded or was simply ingnorant of the existence of the Suzuki 'Madura' during the same period, which by the way, made the 'Magna' look like a beauty queen, shows his very limited awareness of what was really 'hard on the eyes' back then.
There were SO may god-awful looking bikes in the thirties, forties, fifties, and sixties that a list of the fugliest would be in the hundreds, not the tens.
And as it concerns that Guzzi photo that is posted above, that bike has very nice 'lines', is well proportined, and has a classic 'Cafe Racer' look that appeals to me. The finish and colors suck generally, and the overuse of dull greys and blacks ruin what is potentially rolling eye-candy.
I simply disagree with the notion that the Rune is ugly.
You want UGLY? try first generation Victory machines before Arlen Ness saved their butt with some kind of 'style' that got rid of that built-in-a-garage-from-plans-bought-from-the-back-of-a-Popular-Mechanics-magazine 'look' they ALL originally had. The fact that Victory is still around today is largely because of Ness, and of course Victory's good sense in hireing him to 'fix' those turds before it was too late.