^These guys have got it, although it's sort of a hard rotation to describe... what I like to say is that in a regular cork, at 180 your head is towards the jump, feet downhill and you're staring at the ground. In a bio (forward cork), at 180 your feet are toward the jump, your head downhill and you're staring at the sky.
'Oh, he's very popular, Ed. The sportos, the motorheads, geeks, sluts, bloods, waistoids, dweebies, dickheads--they all adore him. They think he's a righteous dude.'