Now this crossover with Dr. Who is super, super geeky and I love it! As a kid I religiously watched Scooby-Doo because I was usually more interested in the monster, especially if it was a Sci-Fi-based one. Of course Shaggy and Scooby amused me with their bottomless appetites. As I got older, I endured the show since Blue Falcon and Dynomutt followed.
The artist behind this design really nailed down the Hanna Barbera look on Dr. Shaggy.
When the joke/shirt gets old(er), I know a big Scooby fan who will enjoy this.