Owen and Beru are my heroes. I suspect they are secretly the reason behind the salvation of the galaxy. ;) They're the reason Luke is able to discard the problematic teachings of Obi-Wan and Yoda and find another solution.

*blushes* Thanks for the comment! Especially on the change bit... It almost doesn't matter how he will change things - it's the fact of change that bothers the Jedi so much.