all but the first ones are pretty alright. i honestly think they just put that one on there to rule out the loonies. like...get real. you can't make anything sensible out of that.
Mine was optional and they only wanted about 300 words made it nice and easy. Mine must've been good, I got in.
When I applied to schools i think their was one there that was "If you were a cartesian coordinate plane, what coordinate would you be and why?"
The admissions people don't really care what you write for these types of questions. They are meant to be confusing as hell and the school understands that. They are looking at how you write as opposed to what you write.