I think in that picture, everything is hooked up with the receiver pulled out so I can access it. Heh now that I pushed it back in, oh boy, cables are just bunched up right behind it =)
Here's what I have going on:
I've got a component video auto sensing switch box that does component video, optical, and coax, it even converts optical to coax and coax to optical. So I have the GC component video cable and stereo audio, PS2 w/ component video and optical audio, and Xbox w/ component video and optical audio going to this switch box.
From the switch box, I have a set of component video cables, stereo audio, and optical audio cable going to my receiver. Also going into my receiver is another set of component video and coax audio for the DVD player. Hanging loosely to the receiver is an s-video cable, stereo audio, and optical audio ready to be plugged into the DirecTivo unit. Also hooked up is a stereo audio cable that's hooked to my iPod dock. Then I have five sets of speaker cable and a subwoofer cable going into the receiver. Finally I have a set of component video cables and s-video coming out that will hook up to the TV.
But wait, there's more. I also have a netgear switch which has ethernet cables running to the GameCube, PS2 and Xbox. It also has a cable that's hooked to a wireless bridge. On top of all that, each device has a power cord.
That is what is in all that mess =)