[1][2] He became well known in the Swedish press, with the nickname "Naken-Janne" (English: "Nude-Janne") because he walked around nude in most episodes of the two seasons he participated in The Farm.

[7] Between 2003 and 2004, Jansson participated in two seasons of the reality series The Farm, becoming known as an outspoken naturist who walked around nude during most episodes.

In 2003, he appeared nude in the music video for singer Markoolio's song "Vilse i skogen" (English: "Lost in the woods"), as the water spirit Neck from Swedish folktales.

[9] Jansson released a book Den Nakna Sanningen (English: The Naked Truth) in 2005.

He also released a music single, a cover of the song "Leende guldbruna ögon".