Here’s my contribution to this fantastic thread, everything full frame, no crops.

I lurk here all the time but never post in this forum as I am intimidated by the high quality of work here; nonetheless, this gives me an opportunity I cant resist, thanks to all for a great year of learning...aloha....peter

blue morpho mating pair...

28-135mm IS USM with full Kenko Extension tube set and bounced flash.

Action macro:

My first one of substance, hence my favorite...

I think these 2 are my favorites...

Tough call... here's my favorite, a Frost Dragon:

Tough to narrow it down to one photograph, but here it is. Ants harvesting aphids.

My grasshopper really don't like the Speedlight :-)

Here is one from this past summer
Pillow Soft

Tom...

Araschnia levanda portrait - click on the picture to load full resolution:

Sexual parasitism: male Argyrotes "pseudo"-copulating with bee orchid (Ophrys insectifera). Click on the picture to get full resolution.

WOW! Sensational captures here! This is my best (favorite) Macro of 2003. This was taken earlier this Spring on my back patio. Look forward to the next year of great shots "Inching Along" here on the Macro forum.

my best of 2003 right out of the camera (sony 707)

http://www.pbase.com/image/24644210

Wow! What a thread!
For my "best" the contribution would have to be (135mm w/ 36mm of tubes):

Butterfly on a Sunflower...

Here's mine:

Grasshopper and its shadow

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Some amazing work here!