The $10 t-shirt deal of the day over at TeeFury today is a Dr Horrible’s Sing-Along Blog-themed shirt called “Horribly Evil” by artist WInterArtwork.

The sale began at Teefury today, Friday, August 5, 2011, at midnight EST, and will continue for 24 hours from then, and once it’s over, it will not be sold on the site anymore.

The t-shirt is available in men’s sizes in slate blue and women’s sizes in powder blue for $10 each.

Here’s what the artist had to say about the design:

What do you think of this design?