Since the SSD boys and girls have a "Show us your SSD Performance" thread, I thought I'd start one for us mechanical HDD owners.
Simply DL, install, and run HD Tune
and post screenshots of results here in this thread. Please also tell us the Make and Model of your HDD(s) and any other specs you wish to.
I will start it off with my two HDD's:
My main HDD is a WD Caviar Black 640GB, 7200RPM, 32MB cache, SATA 2 unit
My backup HDD is a Seagate Barracuda 500GB, 7200RPM, 32MB cache, SATA 2 unit