Amazing!
This is an amazing and complicated repair mission. The astronauts have to climb *inside* the telescope (with its sharp edges) to perform the repairs, across 5 spacewalks, on equipment which was never designed to be repaired in space, and without being able to reach the ISS as a safe harbour should anything go wrong.
Even if you're indifferent and/or have never watched a shuttle mission before, this is the one to follow (on NASA TV.) That we can accomplish the intricate goals of this mission is testament to the human spirit.