I found the same demand for widescreen stuff in what my site visitors were searching for. So I just started a widescreen wallpaper section on my site. I'm a graphic designer and I make them custom, not just resizing or cropping. I have wide and standard versions of a 300 wallpaper I put together from some promo images, plus many others from Movies and TV. Just thought you might want a heads up! Here's the page: