I know reviews have been posted here about them, but saw yesterday a laser device for dry-fire practice (Optics Planet is where I saw it, they are widely available, though, I think). It is similar to a laser-bore sighter, but when you pull the trigger, it sets off a short laser beam to indicate where your shot would likely have gone. It can apparently be used with snap-caps. If used with the trigger-reset deal (is it Glockmeister that sells them), you wouldn't have to rack after every shot...hmmm, now that I have thought of that, that seems like a good idea...new purchases coming my way, I think.
Madness is like gravity; all it needs is a little push.