The $9 t-shirt deal of the day over at Teefury is a mash-up of Doctor Who and Stargate with “The Doctor has been here” by artist uniique_com.

The sale at Teefury began at midnight EST (Saturday, January 1, 2011) and will continue for 24 hours from then, and once it’s over, it’s gone from the site forever.

The t-shirt design takes the TARDIS, the time-traveling vehicle from Doctor Who and puts it into a stargate from the series Stargate SG-1.

The limited-edition t-shirt is available in Men’s (including 2X) and Women’s sizes, and both are in Navy.

Here’s a word about the design from the artist:

It is said that, if given an infinite amount of time, 1000 monkeys slapping typewriters could reproduce the complete works of William Shakespeare. In the same way, given enough time, the Doctor would surely come to visit the SG Universe. Accept it. It’s inevitable.

What do you think of this mash-up shirt design?