Catwoman by Camilla d'Errico: It'll be auctioned off by the Comic Book Legal Defense Fund July 23 at San Diego Comic-Con. Also, you can pick up a limited-edition autograph card at the TFAW booth.
Watson the Jeopardy-dominating computer by Oren Haskins.
Mecha-bull - - one of several creatures posted by Peter Chan.
Lady with Teddy by Cali Rezo, who has art on sale here.
One of several Batman illustrations by Jackson Sze.
Batgirl costume design by Miles Teves, who has a huge portfolio of professional work. His commentary on this particular design (intended for Alicia Silverstone) is pretty interesting.
Twelve minutes of Arkham City gameplay. Catwoman's and Batman's combat moves look great. But everything in between looks pretty lackluster. I also cropped a few wallpaper-sized stills: