1: "Innocence, with special guest stars: The Daleks." This first one was when I got the settings wrong on some ash particles, creating a rather more sci-fi aesthetic than I would've liked... technically more my fault than Maya's, I suppose!
2. "Because She's Worth It." This was caused by a freak curve in the Graph Editor resulting in ridiculous levels of Jiggle and extremely mad hair.
There'll definitely be more of these before I'm through.