This can all be done in CS4 but the Nik plugins help make this a 5min job.
Crop
Nik define noise reduction
Nik darken/lighten to lighten head
Dodge and burn to contrast background
Nik Pro contrast to bost overall contrast
Nik low key on background only to add depth
Nik color stylizer to add a colour wash to the entire image
sharpen on squirrel only
Nik noise reduction to surpress all the editing artifact
resize to 800 and save for web at 300kb
Add photograph to your favorites
Add photographer to your favorites