Shecky Moskowitz (Sandler) is a struggling comedian working on a cruise ship. Shecky gets his chance to be the ship's comedian when it is thought that the regular comedian, Dickie Diamond (LaRose), had fallen overboard and drowned. (Dickie actually locked himself in the men's room.) Shecky is nervous about performing, but King Neptune (Zane) convinces him to go for the opportunity by telling Shecky about the power of laughter. Shecky's first performance is very unsuccessful as he is booed off the stage, he is especially heckled by the construction worker Dave (Thornton). However, after a lecture by Milton Berle, Shecky succeeds in making the audience laugh. At that point, the terrorists come onboard and want to kill Miss Australia. Shecky, remembering the advice about the power of laughter, saves her by promising to put the assassins in a film.
Adam Sandler as Shecky Moskowitz
Tia Khalil as Gen. Noriega
Tom Hodges as Bob
Scott LaRose as Dickie Diamond
Allen Covert as Bartender
Billy Zane as King Neptune
Terry Moore as Mistress
Milton Berle (credited) as Himself
Billy Bob Thornton as Dave
Dan Povenmire as Yellow Teeth
Steven Brill as Priest
Peter Berg as Mort Ginsberg
Adam Rifkin as Croaker / Miss Spain
Gabe Sachs as Funeral Moaner
Ricky Paull Goldin as Terrorist Without Shirt
Warren Selko as Terrorist With Mustache