"Maniac" was one of two Oscar-nominated songs for 1984 from the film Flashdance. The other one, the Flashdance theme--"What a Feeling"--won the best original song category.
Just for fun--which I need--here is the commercial as well as both the songs from Flashdance in one video.
In the unlikely event that you don't know the Flashdance story, it's about a young Pittsburgh welder named Alex Owens who also works as an exotic dancer. Her dream is to be admitted to a prestigious dance company. "Maniac" is a song she practices for her act at the nightclub. "What a Feeling" is the song she performs for the five judges of the school. She incorporates break dance moves--the street dancing that began in the South Bronx in the '70s.