So here’s one for the LazyWeb: I download and install a lot of software… I end up running a great little app called Monolingual monthly, though, to get rid of all the localization cruft that the software comes with… Usually saving on the order of anywhere from 100mb to 2GB, depending on how long it’s been (run it after you install iLife ’06 and you’ll see what I’m talking about!). So wouldn’t it be great if I could get a version of Monolingual that st in muy dock so that anytime I wanted to install something, I could just drag the .app to the "Monolinguinstaller" and it would cut all that garbage out for me and copy the result into my ~/Applications folder?
Wouldn’t that be nice? Hey, Monolingual’s open source… any takers?
Factory Joe 
have you looked at AppZapper? http://appzapper.com/
ive heard that its quite good and might just fit your requirements 🙂
Hmm.. AppZapper is more for getting rid of apps after you’ve installed them… I want to do this as I’m installing them…! Still, AppZapper definitely looks cool.