Today's photograph is a stunning Asian cat.

I thought I'd share a photoshop tip for sharpening an image without altering colour.
Open image
Create a new background layer
In the layer palette select luminosity (the colour and saturation in the lower layer will be retained)
In the filter menu select unsharp mask and adjust the sliders until you like the result
Flatten image,
I have found this works better than applying unsharp mask direct to the image.