If you work in the dark for better color accuracy and contrast, an illuminated mouse is essential. Gaming mice give you lots of control over the light -- you can usually dim them so you can still see them but the light doesn't interfere with your peripheral vision. They also tend to have finer, on-the-fly control over speed and sensitivity and smoother glide, which I've found critical when switching from photo editing to gaming to writing. lus, you can create macros and assign them to various buttons for your video or photo speed-editing needs.
The Rival 3 is a solid, inexpensive wired model. Wireless versions tend to be more expensive, but I like the $120 Rival 650 Wireless.