There's a lot of generally wonderful sci-fi-tinged work in this gallery of 54 "mind-blowing digital paintings", but I'm especially partial to this piece from Artgerm reimagining the Battle of the Planets cast
Thunderbirds as a coterie of Storm Shadowesque ninja.
It's this sort of stuff that makes me afraid to ever start giving substantial attention to Deviant Art; I'm worried I'd lose too many hours delving.
Update: Can you tell that I've never seen Thunderbirds nor Battle of the Planets before? (Title fixed.)