Jumping Spiders are a favorite subject of mine. I believe this little one is a female Eris militaris, though I'm no expert. The shot was taken in northern California on a small purple artichoke.
I didn't have a ton of light and I was taking the shot hand held, so I used a 400 ISO, which is pretty much admitting that I was going to have to shrink the resulting image a bit to get rid of graininess. If you click the image, you can zoom in. I reduced the image size by a third after some raw processing for sharpness and noise, and I'm pretty happy with the results for a hand held, existing light (bright shade) shot. The colors are awesome and there is a lot of potential composition to work with. I cropped some off of the bottom, but I think this could be framed a lot of different ways and still work.
Camera: Canon EOS Digital Rebel XTi
Lens: EF-S60mm f/2.8 Macro USM
Shutter Speed: 1/160
ISO: 400
Aperture: Av 5.6
Post Processing: Edited in RAW for sharpness and grain, cropped and reduced image size by a third.