Modern Poster - Mr Brainwash (Thierry Guetta) - Madonna - 1990 - United StatesDESCRIPTION: Mr Brainwash (Thierry Guetta), 'Madonna', poster, framed. Thierry Guetta, best known by his moniker Mr. Brainwash, is a French born Los Angeles based street artist. According to the 2010 Banksy directed film Exit Through the Gift Shop, Guetta was a proprietor of a used clothing store, and amateur videographer who was first introduced to street art by his cousin, the street artist Invader, and who filmed street artists through the 2000s