Mark takes viewers from the original story through current iteration, culminating in a never-before-...

In his quest to understand terminal velocity, Mark carefully studies some furry friends before jumpi...

Mark helps viewers dive into three pools; one is filled with 25 million Orbeez, one is filled with l...

The world’s largest Super Soaker, the world’s largest Nerf blaster, and a snowball machine gun are a...

Mark gets sporty in a field-goal kicking contest with his mechanical creation, shows off a rocket-po...