20 Doctor Who Moments We'll NEVER Forget

Christopher Eccleston's first day on Doctor Who involved him chasing down a man dressed as a pig.

There's literally nothing more Doctor Who than a serious actor chasing a ridiculous creature round some corridors. But while this is initially bonkers and hilarious, it's also gut-wrenchingly sad.

You have to have a heart of stone not to feel something when a UNIT soldier pumps the pig full of lead. And Eccleston sells the moment in a raw and powerful way that's quite unlike any of his predecessors.

If there's a moment that sums up how Russell T Davies revitalized Doctor Who while also staying true to its undeniable weirdness, then it's the Ninth Doctor mourning the tragic death of a pig in a space suit.