Two parts seemed rather jarring though. Although I adored the location of it (a graveyard of pirate ships floating haphazardly in dingy, foggy space) I didn't see the point of bringing Captain Hook back. Perhaps there is a good reason. I have yet to see. As of now, it seems unnecessary when they could focus on the wonderful characters they created instead. And he didn't do much but sneer and grumble a lot.
The other part is the inclusion of Don Quixote. What? Right. I don't know either. The character of Miguel Cervantes shows up in an episode which, other than a lesson in courage vs. cowardice, has no real value. Not to be cruel, but it steered away from the story arc just to have Don Quixote appear. I imagine the writers had an affinity for the knight errant and paid him homage this way. I just didn't get it.