I really thought—hoped, really—this sliver of black plastic was the Japanese PS3 Slim. It's not.
It's a wireless router from Logitec—not Logitech, which is known as Logicool in Japan—that's 7mm thin at its skinniest point, ballooning out to 24mm at its fattest. Except for its uncanny Sony style, it seems fairly unexceptional, but man, it got me good for a second. [Akihabara News]