Help: Can You Fix Scrambled Pictures?

One day you are sitting on your computer browsing through your data and then BAM something happens and your hard disk is busted. You take the device to a data recovery specialist, you pay money to have your data back, and most of it is indeed back. Now you plug your recovered data into the computer, from the file viewer you can see your precious pictures, the preview window shows it as it should be, but when you click on some of the pictures, it transforms right infront of your eyes into the scrambled mess you see in the picture at the begining of the post. What’s up with that?

Thankfully not all of the pictures are scrambled  but I have pretty good ones that I’d like to unscramble and have back! Is there anyway, any program, any service, that  would transform the scrambled pictures into their former glory? All smooth and nice? They look fine in the window view, why do they transform when I open them? Some of them transformed infront of my eyes right there in Picasa, one by one, slowly. It was like watching a flower wilting away in extra fast motion or something. Help!

Oh and so I don’t forget, always remember this: back up your files now, NOW. Back up back up back up BACK UP!