(In)famous hiccup remedies include eating a spoonful of sugar,
holding your breath, and/or drinking from the far side of a glass.
The man who holds the record for longest hiccup streak was featured on the Krusty the Klown show on The Simpsons. He didn't give much of a performance: just sat on a stool saying "*Hic* Kill me. *Hic* Kill me. *Hic* Kill me...."