It's an Alias wallpaper, and the images I used are from the most recently-aired (in the US) episode. So if you don't want to be spoiled... well, you've been warned :)
I'm really quite pleased with it. I'm not a graphics wizard by any means, and the graphics programs I use are probably very primative compared to what coloneljack and chiroho and you other creative types use... but I'm pleased.
The pictures in this are from Alias Media and the background from Desktop FX. The quote is from Maroon 5's "Through With You".