Am I really the first this year? Ok then, here goes:

My favorite kind of desktop background/wallpaper is:

• A photo of people (family, friends, myself, ...)
• A photo of my pet(s)
• A photo of something man-made (cars, machines, etc.)
• A photo of nature, space, or something else not man-made
• An abstract pattern
• Artwork, digital or photographed
• A solid color
• Whatever my desktop environment has set for me by default
• I haven't seen my background in weeks, too many windows covering it!

And if you have one you really like, feel free to share in the comments!