Thanks to the man, the myth, the legend KOUSHIK DUTTA (@koush) all Galaxy S phones now have the Clockwork Rom Manager app and a very stable Clockwork Recovery image for Samsung Galaxy S based phones (Vibrant, Captivate, Fascinate, and Epic). The app and recovery image insure every user has full control over their device. It comes with a nandroid back-up that includes all apps installed, anything on a mounted SD, and anything installed using the Froyo A2SD method. It also comes with very useful diagnostic utilities such as fix-permissions. Right now the app and recovery image allow users to take a small step forwards by using Nandroid and other recovery utilities but it will become way more useful as more ROMs, themes, and software hacks are released for these phones.
Check out the information below explaining how this is one of the safest flashes ever as it does not replace the kernel, it leaves the original stock recovery untouched.
If you are interested, download ROM Manager Premium for a small price tag of $3.99. (Trust me, its worth it!)