ABC News

“ Good Morning America” hosts Robin Roberts and George Stephanopoulos have seen and done it all, from interviewing world leaders to covering natural disasters and more.

They always stay cool, calm and collected under even the most stressful of circumstances or the most demanding interview.

But today on “GMA,” one celebrity guest and one pop culture phenomenon had the two anchors so fired up they were left pounding the anchor table in “protest.”

Who is the celebrity?  Here’s a hint:  he just can’t stop dancing.

Take a look: