So we thought we'd take a look and compare their likeness in a gallery - what do you think?
It happened half way through our live broadcast at 7.20am GMT from Melbourne's South Bank. We'd managed to stick to plan during the unpredictability of the urban tap dancers, the leftfield street artist, and the hoards of British Andy Murray fans. But there's always a risk something could go wrong when broadcasting live. I turned to my next guest, Glenn Robbins, a comedian and actor of Kath of Kim fame.
I was thinking is the podium really necessary - can we not just do it on the floor?!
She said: "I've never heard of it before, there's no actual name of the act - I got sent a YouTube video and was told watch this video and call me!" She said she was trained by the Moscow state circus to prepare for her act.
Want to hear the President of the United States Barack Obama perform the Mark Ronson hit Uptown Funk? Give the video above a watch, and you'll be singing along in no time!
We can't accuse Sean of not getting into the Australian spirit! He's jetted around the country all week, tried surfing, met the sharp end of a wallaby's claws and learnt the lingo!
But being tackled by a professional Aussie rules player? That's dedication...
One Direction's Harry Styles reaches the grand old age of 21 on Sunday, so we've asked Richard Arnold to look at how the pop star might be celebrating, and more importantly, who he might be celebrating with. Happy 21st birthday Harry!