He was tired and/or drunk after the Deadmou5 gig.
Anyway, You might of heard but Valve have given Notch an exclusive, One of a Kind All-Class TF2 Hat called 'Top Notch'
I first though Minecraft was coming to Steam and this was a Promo. Turns out it wasn't.
I guess if they did make a promo, It would be a Steve Head.