Nodachi Cuts Twenty-six Tatami Mats With One Blow

"Sherwood Fair, Bruce Baldwin cuts 26 mats to take the world record in the Nodachi class sword. February 24th 2013" -- posted by William Lowry on YouTube, February 25, 2013.

Nice slice.  And it doesn't look like he was even using the blade to its greatest advantage either in slashing or in tip speed.