Here's kind of a good news/bad new story. After having my Maxtor DiamondMax 10 hit the floor, and experiencing the "Maxotr Melody", I tried all of the advice on this thread. When none of that worked, I popped off the cover, and found that my platters had seized. They were frozen solid, I couldnt' even move them with my hands.
Like the other guye did earlier, I found 2 nails that fit firmly into two of the holes opposite each other, stuck a screwdriver between them, and forced it to turn. After working with it for about 5 minutes, the platters were spinning freely.
Now, when I plug the hard drive in, the disk spins up like it's supposed to, but it made a scary screeching noise. I powered down, took the cover off again, and the reader had scored the top platter right around the center spindle. I moved the reader back to the outside of the platter, put the top back on and powered it up again. It's spinning right now, with no funny noises, but my computer won't recognize the drive.
I'm sure I've screwed it up beyond any hope for recovery, but I sent it off to Gillware today in the hopes they can get some of it back. They'll check the drive and let me know what's recoverable and what it will cost before they charge me a dime, so I figured it was worth a shot. It will take a few days for them to receive it, and they said after that they will let me know in 3 to 5 days what files can be recovered.
I'll post back after I hear from Gillware to let you know if I got naything back, and how much it cost.