Without Justin Timberlake, this sketch would have been unbearable. I know Jimmy Fallon's the "comedian" (I've never found him funny, as an aside), but he couldn't even bother to get a British or Australian accent right, and yes, okay, Barry threw a tantrum three, har har har, a laff riot, not so much. It was JT's Robin Gibb in the background, from the attitude to the harmonies, that turned this sketch from something unwatchable into something kind of cute that you wouldn't mind seeing again--provided that JT was playing Robin Gibb. I think it's because he brought some nuance to the sketch, whereas Jimmy Fallon is incapable of subtle, so it was a good mix.