I've been thinking about doing that, but I really don't want to create a fire hazard around my equipment. Where I live we have high winds and if one of those winds causes an electrical surge, basically all my stuff is ruined [sparks, not surges].
Another thing is that I guess I really don't want them all plugged since then it becomes a pain to move things and dust them [again, it's very dusty in my neck of the woods], so I just kinda have them there for show.
This will all change when I get the Wii. Bye bye old systems.