Always back up your hard drives, or at least your pictures. Once you're done backing up your hard drive, back up those hard drives! You see that hard drive pictured in the test for my LightTrap (From MOD YOUR EQUIPMENT! Part 2)? The one carelessly placed under my voltage regulator? It was an old hard drive from an old computer which died. I was using it as a load resistor because it was the best thing I could think to do with a hard drive full of enough old pictures and designs to make me want to cry. After I didn't learn my lesson from that hard drive, I got a new computer with a new hard drive and didn't back that one up properly either... Take it from me, ALWAYS BACK UP YOUR HARD DRIVES!!!