What would have happened if Gallagher chose chemistry instead of comedy? I bet he'd still find a way to smash watermelons – but with liquid nitrogen instead of his trademark mallet.
Why do I think this? Because I saw his alter-ego on a recent episode of Joe Genius – Backyard Science Goes Big Time. Joe Genius is hosted by Jonah Ray and it's an edgy look at science experiments gone wrong, gone right and gone wild.