20 Greatest Moments In Modern Doctor Who
3. Hello Sarah Jane (School Reunion)
The moment in School Reunion when Sarah Jane Smith finds the TARDIS and realises that "Mr Smith" is actually the Doctor is such a heartwarming moment.
It's beautifully directed and performed as David Tennant and Elisabeth Sladen start off cool and detached, before moving closer and closer together until they're the Doctor and Sarah Jane Smith again, running off to fight the monsters.
It was the moment that any doubts about whether this was a reboot or a revival melted away, along with the decades that had passed since Elisabeth Sladen last played Sarah Jane. Our Sarah Jane. To see her back in the show again was a proper delight, and it was like she'd never been away.