Here's a usual item, it's Sonic 2006 (aka Sonic 360) for the PS3, but look inside...the disk is yellow! In the USA, all the game disks have an extreme crop/close up of Sonic's face on the surface, this one is just yellow with the logo. It isn't special, it's just that all the disk art for this game in Australia and Europe was chosen to be this yellow background, with the logo. it is interesting to look at none-the-less. 

TODO: Make some sort of game page?