Some newer in the grand scheme of things stuff that came to mind:
This whole package through and through by Seripop is amazing.
Tobacco from BMSR does all their CD artwork, and all is killer.
One of Scott Herren's alter egos: Piano Overlord. Don't know where he got this imagery, or if he had it specifically shot for the CD, but its badass.
Thought the new Gnarls Barkley cover was really cool. Haven't heard the album but assume it has a video game influence.