Oddly enough I've been playing with my 100mm macro this evening. I've been saying for ages I should photograph my wedding and engagement rings "just in case" - and tonight I finally got around to it. I also took some shots of the new motherboard that's just been fitted into our pc - why? Well, just because it was there, really!
I got my 100mm from Kerso - well worth trying him for a price, he was by far the cheapest when I got mine last year.