I'm not sure where the pic is right now, but Christopher Hitchens had a pretty badass (excuse me) bike that I remember seeing a few times in some of his pics. I'll try to find it.
I can't imagine riding anything that I can't put at least one foot down on. Not that I'd be afraid to ride it, but it just seems like it'd be too much of a pain for me. I don't even ride motorcycles that I have to lean a foot down on, except large enduro bikes.
__________________
"¿ʞɐǝɹɟ ɐ ǝɹ,noʎ uǝɥʍ 'ʇı ʇ,usı 'ʎlǝuol s,ʇı"