I don't know about everyone else but I'm very disappointed with all of the images in the gallery. I am talking about the quality of the images, I may not been looking hard enough but it seems that almost every image is a .jpg (yuck). Most people do not notice, but I have been working with images for a long time and it kills me when I see low quality images that could easily be saved in a better format. After all, hard disk space is no longer much of an issue.
I have found a few good wallpapers that I like to use, and am going to start formatting more desktop wallpapers into the Droid resolution and I will be saving them as .png and labeling them as HQ in the gallery. Please do the same if you have any high quality .png images. It does make a huge difference on the phone display.
When uploading HQ images, add "HQ" to the tag list.
LINK to search for HQ wallpapers.
HQ Droid Wallpapers