Those of us who spent our formative years in the 80's would know, but for those a bit younger, if you have a jailbroken iPhone and are wondering who just appeared as your wallpaper, it's Rick Astley, a singer who was (at least somewhat) popular in the 80's.  His video was the first example of "rickrolling"

Chris (nice name btw) pointed us to a forum where the owner of a jailbroken iPhone reported the change in wallpaper which also included the words "ikee is never going to give you up", a reference to one of Rick's songs.

Computerweekly.com has a nice article on the worm, which is being called ikee.

Sophos also has a nice article.

And yes, despite the massive temptation, all the links in this article point to where they should.  :)

Christopher Carboni - Handler On Duty