Grinspoon is an Australian rock band from Lismore, New South Wales formed in 1995 and fronted by Phil Jamieson on vocals and guitar with Pat Davern on guitar, Joe Hansen on bass guitar and Kristian Hopes on drums. Also in 1995, they won the Triple J-sponsored Unearthed competition for Lismore, with their post-grunge song "Sickfest". Their name was taken from Dr. Lester Grinspoon an Associate Professor Emeritus of Psychiatry at Harvard Medical School, who supports marijuana for medical use.

Grinspoon changed their sound to more mainstream rock by their 2002 album, New Detention, gaining fans and peaking at No. 2 on the ARIA Albums Charts; similarly 2007's Alibis & Other Lies also reached No. 2. Their 2004 album, Thrills, Kills & Sunday Pills, which peaked at No. 4, won the 2005 'Best Rock Album Award' at the ARIA Music Awards.