The Museum of Geeks tee design is for the video game enthusiasts, especially the Super Mario Bros. fans.
The concept for the Museum of Geek History tee is that Yoshi's fossilized skeleton is on display at a history museum labeled as the "Yoshisorus". This is not the first tee to play on the dinosaur aspects of the character. For example, there is one archaeological based tee where Yoshi's remains were unearthed. But this presentation conveys the idea in a more detailed manner.
As for the artwork, The simple isolated layout works ideally for this piece. The coloring is great with bright hues (Green and Red) for the subject matter and muted tones for the background for some added depth. The textures such as on the bones, the wood grain on the floor panels and the frosted half-tones on the glass are superb. It looks like a lot of time was put into this design.
This is an awesome Super Mario Bros. reference tee that can be worn at any casual event. Comic-Con and E3 are to places where this tee would shine.