Your new screensaver background

Perhaps this? That's one of the new photographs released by the Hubble Space Telescope yesterday, the first release of new photographs since the servicing mission in May. That's the Carina Nebula, a full 3 light years in length. For comparison, the distance from our solar system to the nearest one (Alpha Centauri) is 4.3 LY. Our fastest probe, Voyager 1, would take 50,000 years to cross this nebula.

This one is also not too bad.