10 Terrible CGI Moments In Modern Doctor Who
3. The Scribble Monster (Fear Her)
Fear Her is a really dull episode with a great concept at its heart. The "villain" of the story is a young girl, Chloe Webber, who can draw any person on the planet, and that person will become stuck inside the paper that she uses.
In addition, Chloe can also create living beings from her drawings, which is how the episode's Scribble monster comes to life: Chloe scribbles on some paper.
This monster attacks Rose when she's investigating a garage, springing from the shadows and leaping at her face, and it's literally a visual mess. It looks like a flat 2D image that wiggles a little bit, and there's no sense of depth in the way it's been executed, no sense that this monster is actually there in front of Rose.
To be fair, you could say that this effect is meant to look shoddy, because the whole point is that it's a young girl's scribble that's leapt off the page, and scribbles, inherently, look messy. But even if that's your angle... it still looks bad.