Madness, as you know, is like gravity. All it takes is a little push!

 Left to his own devices, Craig goes mad with power and builds his very own fortress of solitude. 

Then begs us to witness his base jumping skills, only to realise it's a backpack not a parachute he's packing. Skeleton costume appeared to be prescient.

It's not a tuba

 

So when you're playing you feel like a preserved moose on stage?

Bart dropped by to say "Hi!", Zaph continued stirring the cauldron - everything's fine and normal, as expected really on this Hallow eve.

I dropped by Dave's house, he didn't say much.

I've lived through three end-of-days, it's never got weird enough for me.