In January 2010, Knudsen was reported to use the Muhammad cartoon drawn by Kurt Westergaard as his profile picture on Facebook.
Erik Satie | Erik Erikson | Erik Spiekermann | Erik Friedlander | Erik Estrada | Erik Davis | Erik Hersman | Ulf Lundell | Ulf Kristersson | John Erik Kaada | Erik Zabel | Erik Werenskiold | Erik Hornung | Erik Gandini | Sven-Erik Bäck | Stein Erik Hagen | Povl Riis-Knudsen | Morrison-Knudsen | Karl Erik Harr | Erik Wøllo | Erik Voorhees | Erik Solheim | Erik Sjöqvist | Erik Parker | Erik Nilsson | Erik Gustaf Geijer | Erik Grönwall | Erik Grendel | Erik Forssell | Erik Bye |