Just thought I would start this one off as over the last weekend I had the honour of taking up for a trial lesson the tallest person ever to fly at my club - all 7'2" of him!!
Just for fun, he tried to climb into and out of a Cessna 152 and managed it quite easily, although his knees ended up way above the yoke making safe flying virtually impossible!

We eventually took up a Warrior.
Can anyone trump 7'2"?