Speaking of the Superman toys, I saw a remote-controlled flying Superman toy (think R/C airplanes) as well as a Gak-like substance called Krazy Kryptonite.

C'mon man! Krazy Kryptonite! That's marketing genius!

http://i13.photobucket.com/albums/a283/IAMTHECHEESE1138/krazykryptonite.jpg

Krazy Kryptonite compound can be molded, thrown, bounced, or stretched! The Krazy Kryptonite compound comes in a plastic molded case that is similar to the Kryptonian crystals featured throughout the movie, Superman Returns.

The green Krazy Kryptonite compound easily scoops out for a variety of ways to play.