Broccoli seems like a great subject for a macro because the vegetable's components are so much more interesting when viewed enlarged.
Some facts about broccoli
1) The word broccoli comes from the Latin word brachium and the Italian word braccio, which means "arm".
2) Broccoli is a part of the cabbage family.
3) Eating broccoli reduces the risk of coronary heart disease and death in postmenopausal women.
4) In Treehouse of Horror XI, Homer Simpson is killed by eating broccoli.
5) A compound found in broccoli appears to have more effect than modern antibiotics against the creation of peptic ulcer causing bacteria.
6) Broccoli is a cool-weather crop and grows poorly in the summer.
7) Broccoli comes in a variety of colors, ranging from deep sage all the way to dark green and purplish-green.
8) Tom "Broccoli" Landers holds the current world record for eating 1 pound of broccoli in 92 seconds.
9) Broccoli is high in Vitamin C and also soluble fibre.
10) Humans have been growing broccoli for more than 2,000 years. It was first grown in Ancient Rome in the Italian province of Calabria, where they called it Calabrese.
11) Broccoli consumption has increased over 940 percent over the last 25 years!
12) It is a good source of Vitamin A, Vitamin C, potassium, iron, beta carotene, and fibre.
13) Broccoli has as much calcium ounce-per-ounce as milk.
14) Broccoli is a member of the cabbage family and is closely related to cauliflower,
15) Broccoli was introduced to England around 1720 but did not become an important crop in the United States until after World War II.
16) Since then, the United States has become the world's largest producer of broccoli. The leading broccoli-producing states are California, Arizona, Texas, and Oregon. Broccoli is also grown in Italy, northern Europe, and Asia.
Technical: this is my first attempt at a macro using a reversed 28 on a 100. The lighting was from the right, at quite a severe angle, using a flash.
UPDATE 2014 - I have put together an extreme macro photography learning site to explain the techniques and equipment used for all my macro photos here in Flickr which is now ready. To point to a few of the links that people who want to learn this stuff might like to have a browse of:
Focus Stacking, Focus Stack Preparation, Shooting A Stack, Stack Processing, Stack Post Processing, Schneider Kreuznach Componon 28 mm f/4, Schneider Kreuznach Componon 35 mm f/4, Schneider Kreuznach Componon 80 mm f/4, Nikon El-Nikkor 50 mm f/2.8N, Reject Enlarger Lenses, JML Optical 21 mm f/3.5, 20 mm Microfilm f/2.8, Anybrand MP-E 65 Macro Lens, Manual, TTL, Rear Curtain Sync, Extreme Macro Backgrounds, Single Colour Background, The Gradient Background, Adjustable Flash Shoe Mounts, Extension Tubes, Eyepiece, Field Monitor, Flash Bracket, Focusing Helicoid, Holding Tools, Lens Adapters, M42 Iris, Macro Tripod, Making A Macro Beanbag.