Checkout the new App "Launchpad-Control" for Lion:
http://chaosspace.de/dev/launchpad-control-hide-apps-from-launchpad/?lang=en
It allows you to easily hide/unhide the apps from Launchpad.
http://chaosspace.de/dev/launchpad-control-hide-apps-from-launchpad/?lang=en
It allows you to easily hide/unhide the apps from Launchpad.