[2] His father was the singer of a Christian rock 'n' roll band, Good Grief, while his mother was a keyboard player in the support act.

[6] He opined that it was no surprise that Grinspoon were "a young troop of riff-masters balancing on the thin line between hard and punk rock".

[8] Their highest point on the related ARIA Singles Chart was actually achieved by two of their extended plays, Pushing Buttons (September 1998) and Panic Attack (March 2003) – each peaked at No. 13.

[11] Jamieson showcased the sounds of Grinspoon to millions of viewers in March 2006, playing live at Melbourne Cricket Ground as part of the closing ceremony of the 2006 Commonwealth Games.

[15] In July 2014, Jamieson, Cheney, Pyke and Rogers once again performed the White Album on an Australian tour, with a 17-piece orchestra.

[18] In March 2017 Jamieson starred as St Jimmy in the Australian premiere of the Broadway musical 'American Idiot' in Brisbane.

[21] As of February 2014, Jamieson resides in Wauchope, Australia,[22] is an avid South Sydney Rabbitohs supporter and is the team's number-two ticket holder.

In February 2007, Jamieson attended the Odyssey House drug detoxification unit in Sydney, to overcome his addiction to crystal methamphetamine, also known as "ice".

[2] Jamieson claimed the information had been leaked to the media a week later by a nurse, and said that he felt "My confidence, or my confidentiality, was completely raped".

[23][24] In July 2007, he went public in an interview with Andrew Denton on the TV program Enough Rope, and spoke of stealing from his bandmates to fuel his drug use and becoming estranged from his wife.

[2][25] Jamieson and Julie embarked on the 'Rock N Ride' tour in January 2013 for Headspace, the National Youth and Mental Health Foundation.

The tour aimed to engage local communities and raise awareness about youth mental health issues and ice.