Lei-Fei's dance

I find it incredibly hard to do Lei-fei's dance.

Is it necessary to do if you want to master Lei-fei or is it just some fancy things to do with Lei-fei?

I watched the movie clip of Lei-fei players and most of them did lil dances to confuse opponents and did surprise attacks ?

 

I've stated it before, and I'll say it again -- it helps, big time. I've never seen anyone NOT do it that was any good w/ LeiFei, and I've played more than a few Lei Fei's. Just takes practice (I'm a bit mediocre at it to be honest, and I"m 4-dan in the arcades). Otherwise, he's just too easy to anticipate. My friend plays w/ him and doesn't move him around, so I know exactly what's coming.