I don't believe he's improvising,
I think it's all rehearsed.
(PsychoChomp, Mon 1 Jun 2009, 10:57, archived)

Well yeah, i reckon if you watched the same show two nights in a row they would be near-identical
but you only watch it once, see? So it's like for real.
( Malaka omdz, Mon 1 Jun 2009, 11:06, archived)