Watch Movies2Watch. With his witty wordplay and wacky props, Leo Gallagher became one of the biggest comedy acts of the 1980s. The comedian’s most famous bit: smashing a watermelon with a giant mallet to the messy delight of audiences. His signature act was a gift and a curse, shooting him to superstardom while breeding both dismissive detractors and imitators, including his own brother. As tastes change, the aging Gallagher seeks the respect he deserves as an innovator in the art of stand-up comedy.