How to recover files/data on corrupted USB disk

I use by USB thumbdrive almost every day at home and at work.

Today, at work I plugged it in and all the directories/files were corrputed.

Do not use chkdsk /f, as this is useless to recover the damage.

You can use the following two free programs to recover the data:
TestDisk http://www.cgsecurity.org/wiki/TestDisk_Download
or
Recuva http://pcsupport.about.com/od/filerecovery/gr/recuva-review.htm

both have managed to recover alot of the data for me.