Sat in 44K from Newark to Narita - absolutely the last seat on the plane. I chose it because of the extra leg room but expected to pay a price of being last to go through Japanese Immigration - with resultant delay.
Through the vagaries of terminal train shuttle loading and unloading (and some wily frequent flyer finagling - sorry Gramma), I ended up being the first through immigration. As a result, I waited only 5 m for the Narita Express.
It's sad that saving 30 minutes at the end somehow makes the previous 18 hours of travel more acceptable.