I was browsing around on reddit this morning and what did I find but a collection of truly awesome Zerg wallapapers. Here is the link to the gallery: http://imgur.com/a/g3zHG and here is a link to the original post on Reddit: http://www.reddit.com/r/starcraft/comments/nw01f/zerg_unit_wallpapers_series/. Also, mad props to redditor and artist masterguide for the excellent work.
You know you want them. Enjoy!