Let's have a game to see who can come up with the best Doctor Who jokes.
I'll start off with a few examples:
1) Why is 'Doctor Who' like a kitchen?
Because it's had more than one Baker working for it.
2) What would you call a nostalgic episode of 'Doctor Who' in which all his old enemies come back to haunt him?
Terror of the Bygones
3) What would you call a special adventure combining elements of 'Doctor Who' with 'The Importance of Being Idle'?
Doctor Dolittle
4) Knock, knock
'Who's there?'
'Doctor'
'Doctor Who'
'The Doctor who's a little bit mentally re-Tardis.