Using Gunston's gormless personality as a cover to break down the defences of his "victims", McDonald pioneered the satirically provocative "ambush interview" technique which was used to great effect in interviews with Paul McCartney, Muhammad Ali, Keith Moon, Leif Garrett and actress Sally Struthers. When Gunston interviewed Elton John, who was in Australia to promote "Tommy", Gunston began by asking "Are you going to premiere in Wollongong?" "No, but I've played tennis with her", John responded. "You're thinking of Evonne Wollongong", Gunston said, "I'm talking about the city."