that thing with the tv and psp
I guess you guys aren't looking very closely if at all. If you notice the back of the device and the front of the display, as well as a few words in the discription concerning portability, this is obviously a replacement case that attaches to inside components. The front of the PSP (just below the screen) is much taller than it previously was and the back has a space for the UMD drive to pop out and allow you to insert and remove UMDs.
You wouldn't have to worry about the space for UMD insertion and removal if it could snap on and off, though it would be a bit more convenient (although unfortunately also technically impossible for previously stated USB reasons).
Anyways, that's what I deduce from actually looking at the picture and not just seeing a PSP with something hanging off the back. Let me know if I'm right.
(Not sure if I would use it since I have to open the PSP and void the warranty. I still have a 1.0 Japanese PSP. But I do like the idea.)
Edit *Make that a replacement case and a dockable AV connector. OR a modification to the original case and the dockable AV connector. I re-read again and decided there was room for a couple of extra options.