I have a less commonly used 16:9 widescreen monitor instead of the usual 16:10 which makes it slightly harder to find wallpapers for. It runs at a 1366x768 resolution.
note: any of you who think widescreen looks a little stretched is probably looking at monitor running on a non widescreen resolution. (like some of the badly configured PCs in my college which I can't help but set to the right resolution)
16:9 resolutions
1280x720
1366x768
1920x1080
16:10 resolutions
1280x800
1440x900
1920x1200