"This weapon is your life"
I thought of something the other day:
In Clones when Obi-wan hands Anakin his lightsabre back and says "This weapon is your life, try not to lose it."
I can't help but think this statement will have something to do with Anakin giving his blue blade to Obi-wan (to give to Luke). Perhaps this is Anakins last good deed, knowing that he is damned to the darkside.