It's not the tune that makes a hit... it these silly videos.
I think Harlem Shake by Baauer is going to be a hit just judging from all the spin-off videos..... like this one
http://www.youtube.com/watch?v=0IJoKuTlvuM
and this one
http://www.youtube.com/watch?v=W52rnrwG9p0
and this one
http://www.youtube.com/watch?v=QPv57e3CAJY
and... this list goes on...
I love it.