The term 'Menlo Park Whiz' refers to Thomas Edison, the famous inventor who worked in Menlo Park, New Jersey. He is often referred to as the 'Wizard of Menlo Park' due to his prolific inventing career and the numerous inventions he created while working in Menlo Park. Edison was responsible for inventions such as the phonograph, the light bulb, and the motion picture camera. He is also credited with helping to develop the electrical power grid and the telephone.