NASA Shuttle Mission STS-125 is currently performing spacewalks to repair and replace cameras on the Hubble Space Telescope. You can watch it live on NASA TV. Thanks to the internets you don't need one of those old school humongous satellite dishes to watch NASA TV (like when I was a kid).
The NY Times has an impressive interactive animation that illustrate the repairs planned for the Hubble telescope.
The amazing photo blog, The Big Picture from the Boston Globe, documented the preparation for the current STS-125 repair mission. Did we already mention that these photos are spectacular? You really get a feeling for the size of the rocket boosters and the giant orange monster fuel tank. Speaking of orange, be sure to wave and say hello to Megan as you scroll through the pictures.