"The March of Time" (t-shirt) by Nik Holmes
"Weeping Boos" (t-shirt) by sleepingsky
"A Helpful Guide" by Michelle Dadoun
"Trial By Fire" by Victor Maury
I don't know what Doctor Hazmat is (a webcomic? a themed store?) but I dig the idea of a science-themed Nintendo game. Doctor Hazmat's GIR-like robot M.A.C. is also pretty rad.
Alongside retro 8-bit NES box art, the Arcade Artist does very cool 8-bit sprite magnets, available for sale on her website.
I feel like I've posted this before, but it's worth a repost. I particularly like the faux-box-damage.
Check out Jeff's entry for his imaginary Calvin and Hobbes game here. He's not only mocked up the above box cover but also actual in-game screenshots. Worth checking out.
This variant cover for Boom! Studios' first issue of DuckTales was sold exclusively at the 2011 San Diego Comic Con. Interestingly, it was written by long-time Disney fan Warren Spector, the man responsible for Epic Mickey, Thief, and the first two Deus Ex games.
It's Deadpool in a videogame. 'Nuff said.
"Battletoads Minimalist" by Tylor Chase Perry