Do you flash a lot of ROMs on your Nexus S 4G? If so, you will want to definitely check out TWRP Recovery for rooted Nexus S 4G, which brings 100% graphic user interface (GUI) to your recovery menus.
Instead of having to use your Volume and Power buttons, you can now do everything using your screen.
Installation is pretty easy, put your Nexus S 4G into Fastboot mode and flash away with fastboot. Download TWRP here For video tutorial on how to inst