10 Biggest WTF Doctor Who Moments

Sadly not a crossover between Tom Baker and Keanu Reeves, this serial from 1976 sees the Fourth Doctor take on the Master in a battle that will determine the fate of Gallifrey.

Here, the Doctor enters the Matrix, which is essentially a supercomputer containing all manner of Time Lord knowledge. When the Doctor is loaded into it, things get super wacky super quickly.

Our hero turns up in a quarry (where else?), where he falls down a hill for no decent reason. He then ends up on an operating table while a man with a ridiculously oversized syringe stands over him. Then, a bloke with a horse turns up, and there's also a creepy clown thrown in for good measure.

Basically, what we're trying to say is that everything goes mental and it's wonderful.

This whole sequence is like something out of a piece of surrealist cinema. It's completely unhinged, but it probably did a great job of putting an entire generation of children off psychedelic drugs.