A massive meteor threatens to destroy planet Earth, so scientists try to stop it with high-powered lasers.

A girl who halfheartedly tries to be part of the “in crowd” of her school meets a rebel who teaches her a more devious way to play social politics: by killing the popular kids.

Each year, three brothers Samuel, Jeffrey and Michael Douglas visits their Japanese grandfather, Mori Shintaro whom the boys affectionately refer to as Grandpa, for the summer. Mori is a highly skilled in the fields of Martial arts and Ninjutsu, and for years he has trained the boys in his techniques. After an organized crime ring proves to be too much for the FBI, it’s time for the 3 brother NINJAS! To use their martial arts skills, they team up to battle the crime ring and outwit some very persistent kidnappers!

A high-school gym teacher has big plans for the summer, but is forced to cancel them to teach a “bonehead” English class for misfit goof-off students. Fortunately, his unconventional brand of teaching fun field trips begins to connect with them, and even inspires ardor in some.

Rival groups in a skiing school do battle on and off the piste. One gang are rich and serious, the other group are party animals.

A college teacher brings the little creatures back to his campus, where they proceed to terrorize the faculty and students.