Compared to actually doing the image editing, updating the wiki should be a breeze.

I'll give it a try after posting this message.
Compared to some artwork I just finished Photoshopping last night, all of the TMBG artwork, except for Long Tall Weekend, for which I have CD inserts in good condition, has been a breeze. Still more work than is sane, but
relatively, a breeze. Now this is what I call a challenge...
I decided to scan a scuffed-up old LP sleeve to use as iTunes artwork, to have in addition to a scan of the very-different CD artwork for an imported Japanese release of the same album. The artwork is a bit cheesy (and so are parts of the music), but the album is of sentimental value to me, being one of the first albums I ever bought, and a big part of my early introduction to both electronic and classical music.
The first big problem was that my scanner only does 8.5"x11" material. So I had to scan the sleeve in four passes, and I had to turn off all automatic color adjustment to reduce color matching problems between each pass. Here's a scaled-down version of where I started, with a very rough overlap of the four separate scans (before manually aligning and brightness/contrast matching the pieces):

Several patient hours of Photoshopping later:

As if stopping there wasn't good enough, however, a dumb idea struck me as I was going to bed, that I felt compelled to do something about it when I got up this morning (good thing I have the day off!):