Tap-dancing is one of those old-fashion throwbacks that theoretically shouldn't be cool anymore. But it requires such incredible -- and incredibly subtle -- skill that when done well it will blow you away every time.
Which is why this viral video of "Book of Mormon" star Christopher Rice and his fellow Broadway dancers tapping along to Anna Kendrick's surprise "Pitch Perfect" hit "Cups (When I'm Gone)" is so amazing.
It's not the only one, of course, so we've collected ten other amazing YouTube "Cups" covers below.
Here are the other dancers featured in the video and their respective show.
Darien Crago ("White Christmas" Tour)
Andrew Hodge (Tours of "A Chorus Line," "Cats")
Christopher Rice (Broadway's "The Book of Mormon," Tour of "West Side Story")
Natasha Scearse ("White Christmas" Tour),
Kelly Sheehan (Broadway's "42nd Street," "White Christmas")
Clay Thomson (Broadway's "Matilda," "Newsies")
Kirstin Tucker (Broadway's "Cinderella," Tour of "West Side Story" )