yeah, as far as the mario theme itself, I guess it's kinda cool, once.
but that's not the only video, there is one where he creates this long and exuberant montage of all kinds of well known pieces.. yes, it's technically demanding, but it's not very musical, IMHO.. And he ends it with this crashing chord, jumps up off the bench and solutes his piano (imaginary flag?) - kinda lame.. yes, very fast technique, explosive too, but it's lacking something
I'd be interested in hearing his real repertoir.. he may be quite good for all I know