I was going through some old files and found a cache of definitively turn-of-the-millennium wallpapers. I'm sure there's a proper name for the style but it tends to look like anime robots violently disintegrating in abandoned subways at best. Here are some examples. I unfortunately don't know the artists behind any of these* but I probably found them somewhere on Deviantart circa 2003.
*OK, the one at the top left is by Pete Harrison.