Germany company SSI Schaefer has a huge, Matrix-style take on carousel storage. The Schaefer Carousel System uses three monster vertical carousels that, despite their name, rotate horizontally; automated shuttles zoom up and down the vertical axis to retrieve one of the 3,417 bins stored in the system. Operators can be offsite--sitting in a call center office, for example--and send the instructions via computer, to the tune of 700 storage operations per hour.
I have no idea why this explanatory video features a club-music soundtrack, but scoring incongruity aside, the system is pretty neat: