10 Terrible CGI Moments In Modern Doctor Who
2. The Lazarus Monster (The Lazarus Experiment)
While a lot of Doctor Who monsters can be brought to life practically, there are other instances where CGI is the only option.
Take 2007's The Lazarus Experiment, in which the crew had to somehow get a gigantic scorpion monster - with a human face - up on the screen, and while everyone involved surely tried their best, they were fighting a losing battle against Doctor Who's tight schedule and limited financial resources, because the final effect is a disaster.
There are loads of problems with the end result - such as the fact that it never feels like it's lit in accordance with its surroundings - but the biggest issue is easily the face, which looks like it's been hurriedly plastered on top of the main monster model.
The eyes are also completely dead too, never selling the fact that this is a sentient, real creature. It looks like a PS1 cutscene, and that's being generous.
It's a shame too, because the story of the episode is really intriguing, with Lazarus' desire for a longer life challenged by the Doctor's own existence: he's lived for centuries, watching his friends die around him. He knows how hard immortality is.
But when that big dumb scorpion monster comes barging into the plot, it falls apart.