Yeah, I actually use copies of stuff quite often. I have a few old Need For Speed games that have been used so much they are starting to get to scratched to use the originals reliably.
Also I like to use copies at LAN games and such, that way when I have several games with me at once, I don't have to worry about being careful with them, I can just set them down wherever. Not to mention I can throw all the copies in a paper sleeve, and reduce the amount of junk I have to carry.
My Desktop: <A HREF="http://Mr5oh.tripod.com/pc.html" target="_new">http://Mr5oh.tripod.com/pc.html</A>