Daft Punk (lost TV commercial; 2002)
Daft Punk are a French House band that formed in 1993 that spawned many hit singles such as "Around the World", "One More Time", "Technologic", and "Get Lucky". Around their Discovery era, they were featured in some advertisements for Gap, Toonami, and others.
One of their commercials, for the 2002 Winter Olympic games however, is lost.
The Lost Ad
In April of 2012, The Daft Club user Thomas Bangalter made a post on the thread asking how to rip the content of a VHS containing four TV Advertisements and an EPK in high quality. There was no sign of these ads ever being shown to the public, due to the little interest by fellow posters. Later in 2012, YouTube user fullmetalanbu posted a video of his VHS collection, which included the VHS case and tape with the four ads on it. He also uploaded some of the ads off of the tape on to YouTube, though one ad that was not uploaded was a Winter Olympics spot, which featured their song "Harder Better Faster Stronger".