Most of these will include a tram or subway related item, but if the
thing seems really cool I'm going to add it anyway (with notations).
ScreenSaver - not a subway but pretty cool
site - Really, really cool screensavers (in German), including the Hannover
LRT and the Dortmund subway. The site also has some great Berlin S-Bahn
A great screen saver (Win95
Mac) from the
tour with metros
Screen Saver from the
Berlin U-Bahn site.
Scroll down the navigator bar and click on 'Fun'