This site often does shooting challenges, but this week's I thought was really nice. And, my NAS is flaring even more than ever, I'm itching to get a 105mm micro now. I really need someone to talk me out of that now. :D
Not all of them were shot with Nikons, but a fair bit of them were.
Edit- I like how there are shots from all different makes of cameras and models. It really doesn't matter what sort of gear you have, but with bugs obviously you want something faster to catch them before they move. My old point and shoot has a great macro feature, but it's way too slow to catch anything meaningful.
I also like the comments by the photographers themselves about the circumstances, etc.