We really have to hand it to Nick Jonas for somehow being able to constantly elevate our opinion of him, pretty much daily. He went from cute boy band crooner to sultry sex symbol almost overnight, and sometimes it's hard to remember the prepubescent squeak of his Jonas Brothers days.Nick's song 'Jealous' is one of our favorites, and we're obsessed with the different versions of it. From its original sound to that unreal gospel choir version to his performance on 'The Voice' -- we figured at this point, there was no way he could improve on the song. And then he decided to shock us again and do it up even better.

How, exactly, did he deliver on that? Nick stopped by NYC's famed toy store, FAO Schwartz, today (Dec. 16), singing along and playing the chords to 'Jealous' on the huge floor piano made famous by the movie 'Big.' It was certainly no coincidence, as Nick referenced the film in his Facebook post, saying: "I stopped by FAO Schwarz in NYC and had to pay homage to the man Tom Hanks."

Along with the help of two other guys, Nick manages to deliver a totally unexpected -- and totally awesome -- performance. We're seriously impressed. Check out the video above and prepare to be amazed.

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