yeah, I've had a few "oh my god I'm going to die" experiences, plus a concussion or two and other assorted injuries.
but it's STACKS of fun
I'm 5'11" (180? cms). the board is a little too small for me (ideally), which means it doesn't go quite so fast, but turns better. it's a .... crap, doesn't have the size on it. but that should give you a good idea of whether it would suit you (ie, if you're 5'8" - 5'11" it'd be perfect). if you're over 6' I wouldn't recommend it
edit: pm me if you're interested, for some reason this thread isn't sending me e-mails when it's updated.