I wish I could credit the creator of this video (re-uploaded a number of times), but as someone who really enjoys the story of One Piece but found the pacing too slow to justify a re-watch; I think this Anime Music Video recap incredibly captivating and is better at summarising 550 episodes (approx) better than a 30 minute video has any right to.
As an aside, this video can frequently make it into my Gym Cycle workout as it makes 30 minutes feel like 10.
Apologies if this is against any of the ERA guidelines but I thought this would a good share.