Rory O'Donoghue (13 May 1949 – 13 December 2017) was an Australian actor, composer and musician, best known for playing the character "Thin Arthur" in the 1970s ABC Television sketch comedy series The Aunty Jack Show, and for playing the guitar solo on Kevin Johnson's biggest hit "Rock 'N' Roll (I Gave You the Best Years of My Life)". The Aunty Jack Show featured O'Donoghue's long-time creative partner Grahame Bond as the title character.