Hey Hey It's Saturday is a long-running variety television program on Australian television. It initially ran for 28 years on the Nine Network from 9 October 1971 to 20 November 1999, with a recess in 1978. Its host throughout its entire run was Daryl Somers, who later also became executive producer of the program. 

Benny and Björn attended the première of Saturday Night Fever at the London Palladium on 5 May 1998.

Molly Meldrum was there and asked Björn a question and got a brief comment from him.  No footage available unfortunately.

Thanks to Carl Magnus Palm and IanWestOz c/o ABBAMAIL (no longer online)