Blizzard Repair
From Blizzard's New MMO Wiki
Blizzard Repair is an utility that can check files and replace corrupted files as well. Operating under the name 'repair.exe', it resides in the main World of Warcraft game directory of the hard drive.
* Note: The utility is currently only available for Windows systems. * Patch 1.8.0 (2005-10-10): The repair utility (repair.exe) can now be found in the main World of Warcraft game directory on your hard drive.
