It's just zombie line dancing isn't it? I like that the guy on the right has practiced being just that one beat behind everyone else - Corporal Jones style. Fair play though the rehearsals must have been lengthy.

Yeah him and the lady in the blue dress.

I also like the way the groom (I assume tis he) gets to play MJ while the bride is relegated to the second row of zombies,

Am I alone in thinking, 'Twats'

on Youtube...it seems to be becoming a bit of a wedding tradition in the US, and there are also one or two British efforts.