Geeks Are Sexy recently posted an infographic listing actors and actresses who have appeared in both Doctor Who and Star Wars (which includes the dudes that played Star Wars’ penultimate baddies Darth Vader and Boba Fett!). Click to embiggen the list:
In a similar spirit, here are some more DW/SW crossovers I found after a hasty Googling of the internets.
One common crossover theme I found was revamp the iconic droids C3PO and R2D2 of SW as the iconic cyborg adversaries of DW, the Cybermen and the Daleks, such as in

or

(Of course, you don’t have to re-envision R2 as a Dalek to make a Doctor Who joke. You can also work in a good K-9 gag too:)

Another theme is to have Darth Vader bested by Doctor Who characters, ranging from the Doctor himself

to the Empty Child:

One final theme based on the fact that while both the Doctor and Yoda are 900 years old give or take, time has certainly been kinder to one of them:


May the Force and your sonic screwdriver be with you!