I'm going to guess you mean... "un"usual. ;)
Both designs seem a bit unrealistic, but that's just me. I'm far from a bike design expert.
Both of those are concept bikes that have already been discussed in the forums.
I don't expect either of them to go anywhere; they're just fun 3d renderings.
Steering that first one would be interesting with no head tube and the frame hinged in the middle.