- Began acting at 7 years old, but quit at 13 to concentrate on his education.
- Served in the Swedish military, but returned to acting as a career once he was out of his teens.
- Lent his support to the Tails for Whales campaign, a global initiative calling for stronger whale protection sponsored by the International Fund for Animal Welfare. The online petition features photos of people making whale tails with their upturned hands.
- With codirector Björne Larson, won Grand Prix and Press Awards at the 2003 Odense International Film Festival in Denmark for Att döda ett barn (To Kill a Child), a short film narrated by his father, Stellan Skarsgård.
- Appeared in Lady Gaga's music video for "Paparazzi."
- Is a fan of the Swedish soccer club Hammarby IF in Stockholm.
- Nominated for the Swedish Film Institute's Guldbagge ("Golden Beetle") Award for Best Supporting Actor for Hundtricket in 2002.