Is Apple prepping a 3D shopping interface? A Second Life resident thinks it might (via Brand Flakes) if the new patent is any indication. The patent was filed in September 2006 and published a couple of weeks ago. (Follow a lengthier discussion.)
There have been a couple of fan-made Apple stores in Second Life before: see this set of Flickr pictures of one such store and a video of another one below.
This is me in a bootleg Apple store in Second Life in early 2006. The store was selling iPod and iPod shuffle replicas but was eventually shut down. There, you could also pick-up a black outfit and a green "cardboard" background and walk around looking like an iPod commercial.