Best action for action alone is the Maul duel. Up until Obi Wan falls in the shaft. Worst ending to the best action. Otherwise, the speeder chase on ROTJ. The duel in ROTJ blows both of those out of the water for me, but it's due to the cinematography, music, and dialogue, not the action.

I must say, the speeder joust in the Clone Wars was a good romp as well.

As for Yoda and Dooku...yeah. Whatever. Being a great Jedi isn't isolated to being a great warrior. In the OT I thought that's what being a Jedi WAS...wisdom over strength, being used by the force rather than using it. The "New Jedi" is quite different, more a soldier than a leader. Oh well.

And I did like the end of Clones better than Menace. The action is not as good, but for me the surrounding aspects easily elevate it.