Triptych: Time Lord Approved

"The Sonic Mark VI" (t-shirt) by Steve Thomas

"The Daleksons" (t-shirt) by John Sumrow

"Inspector Spacetime" by Sam Spratt

Triptych: The Peanut Gallery

"Batmaaaaaaaaaaaaaan" by Matt Marblo

"Batman" (poster) by Josip Kelava

"Arkham Psychiatric" (t-shirt) by BazNet

Triptych: The Happiest Boss Fight On Earth

"Metroid Disney" by Drew Wise ¹

"Donald Duck Hunt" (t-shirt) by PapaPrime ²

"Disney Steampunk: Pinocchio" by Mecanique Fairy ³

¹ Walt Disney's frozen head would make a great final boss.
² Part of Threadless' Donald Duck T-Shirt Design Challenge. So, not technically a t-shirt yet, but one can always hope.
³ I have very mixed feelings on the whole steampunk thing, and I'm not sure this really qualifies as 'steampunk' anyway, despite the artist's best intentions. Rather, with the mechanical body parts and the hologram of Jiminy Cricket, I'd be inclined to label this as transhumanist - Or at least, I would, if Pinocchio was made out of flesh and blood rather than wood. Either way, steampunk leanings aside, I think Mecanique Fairy's Steampunk Disney series is quite well done.

Triptych: Allons-y!

"Time Lord Magazine" (t-shirt) by Tom Trager

"The Doctor vs. The Universe" (t-shirt) by bogswollop

"Rule No. 1: The Doctor Lies" by The Bear Jedi

Triptych: In The Year 3000...

"Futurama Pixel Art", official promotional art by Matt Groening

"The Call of Zoidthulhu" (t-shirt) by Harry Gordon

"Mom's Friendly Robot Company" (t-shirt) by BustedTees

Showcase: Jérémy Huet's Retrogaming Isometrics

(Click for full-size)
"Retrogaming 1"

(Click for full-size)
"Retrogaming 2"

(Click for full-size)
"Retrogaming 3"

[Jérémy Huet's
Flickr Stream]

Triptych: Coats O' Arms

"Code of Arms" (t-shirt) by Ian Leino (Code Monkeys)

"It's All In The Game" (t-shirt) by Megan Lara (The Wire)

"The Code of Harry" by Elias El Daoud (Dexter)

Triptych: Bustin' Makes Me Feel Good

"Ghost" by Chris Thornley

"Spectral Smashers" (t-shirt) by Jerry Bennett

"Mood Slime" (t-shirt) by upsidedownowl

Triptych: When The Evil Shredder Attacks...

"TMNT vs. The Shredder" (t-shirt) by T-Shirt Laundry

"El Rocksteady vs. Senor Bebop" by beyx

"Pizza or Death" (t-shirt) by Andy Hunt

Showcase: Anthony Pipitone's House\Band Logo Mashups

"Griffindor\Green Day"

"Slytherin\Slayer"

"Ravenclaw\Ramones"

"Hufflepuff\Led Zeppelin"

[Anthony Pipitone's
T-Shirts at Redbubble]