Mr. Nilsson [SEP] creator
Mr. Nilsson
Mr. Nilsson (Swedish "Herr Nilsson") is Pippi Longstocking's monkey in the fictional books by Astrid Lindgren, and subsequent films and television episodes. 
"Herr Nilsson" is also the name of a pop group from Bergen, Norway. They have released three LPs – "I'm No Elvis" (2005), "Downhill Thrill" (2007) and "Long Live Herr Nilsson" (2010) – and one EP, "Tuesday Is My Birthday" (2008).
HaHaHa, achieved 62 million views by Sep 2008.
The video.
The Laughing Baby video, which was shot by a Swedish man in his kitchen in 2006, has a running time of 1:40, and involves a fixed camera situated on William Nilsson, a blond-haired, blue eyed baby, who laughs after brief interjections from a voice in the background (presumably his father, Kjell-Åke Andersson). The video opens with the Swedish text: "kan man ha roligare" which translates as "Can