thats crazy/awesome.
He wasnt "just a passenger" though, he had a little bit of experience. He did not sound very confident though in my own opinion, no more than probably 75-100 hours of time or so. An airplane is an airplane...if you've got someone telling you the approach speeds, landing speeds, stall speed, gear speeds, flap speeds etc (and have some student time/couple landings and know how to read an approach/landing checklist) theres a good chance you can at least get basically any airplane down in one piece.
King Air's are really nice good sized planes, Ive never flown one but Ive flown a cheyenne which is a very similar airplane, twin engine turboprop.
Im guessing that king air in the video was an older one judging by the autopilot settings the guy was referring to, and I didnt hear any GPWS (ground prox) callouts...
I havent flown in a couple years, been too busy, and this really makes me want to get current again and go for my instrument rating.
ben