A Soyuz spacecraft docking with the ISS
Could you imagine floating out in the vastness of space, even the relatively tiny vastness of space in low Earth orbit, in a tiny space capsule waiting to hook up to a slightly larger space station and if something goes wrong, you might die? But on the other hand, look at that incredible view! This HD video of a Soyuz capsule docking with the International Space Station gives you a small sense of how that might feel.
The docking itself takes place starting at around 17:00. The whole thing takes a bit longer than I remember from that Gravity movie. (via @badastronomer)