David Tennant looked a bit worried at the Doctor Who Christmas special premiere, but there was no need - loads of celebs turned out for the launch at London's Science Museum.
Do you recognise these familiar faces? It's Camille Coduri and Noel Clarke who played Rose's mum and boyfriend in series one and two.
John Simm, who played the Master in series three, also turned up for the sneak preview of Voyage of the Damned, which stars pop star Kylie Minogue.
Back to business and David Tennant took time out from his reunion with old co-stars to have a chat with some fans and sign a load of Doctor Who goodies.
It's tough being a time lord, but David Tennant looks pretty happy in the tardis and said rumours that he'll be leaving after the next series are "a load of old nonsense". Phew!