I saw this on another thread. Figured it would belong here well. Anyway, If you don't like the TouchWiz that Samsung has put on, you can follow this to disable it. This is tentative until someone can try it on a Fascinate for sure, but it should work. I have the system dump and the TouchWiz30Launcher.apk is a regular app under /system/app/. I may not be labelled as TWLauncher as on the video, but something similar to it. I will update as soon as I receive mine and more people doing it.
YouTube - Epic 4G How To: Disable TouchWiz Launcher
YouTube - Epic 4G How To: Disable TouchWiz Launcher