SaveGame Manager GX by dj_skual allows you to extract/install SaveGames and Miis from/to your Wii; data.bin files not supported. It allows savegames to be copied from the Wii to an SD card, including savegames that cannot normally be copied from the system menu. It is a modification of the Savegame Manager from Waninkoko. Unlike Savegame Manager, Savegame Manager GX has a Wii-like user interface.

http://code.google.com/p/savegame-manager-gx/