Slow moving, dramatic scenes. They seem to make me very disinterested for some reason, or I just really hate drawing them. If the angles aren't right or the emotions aren't drawn well, the whole page falls apart, so I take way too long on them.
I would love to see how the fat pony that Beatonna draws, would explode all in sudden. Something so montypythonisque about it.
I might be then the odd ball, who rather likes the extreme challenges. I mean, I'm not good with drawing natural textures or scenery, yet I don't fear to bite the bullet. I rather wait in fear, when I need to draw all the "plain portrait/head shot"-panels. I've got one story on hold because I try to find the motivation to draw those exact shots in it, yet...aaargh, they are just so damn boring!