Look up the episodes and just skip the ones that are padding. The animation is kinda bad but its from the early 2000s so the quaint aspects are something I like personally, it might not be to your taste. The anime peaks in the Grand-Line arcs (Little Garden, Drum Island, Alabasta, Skypeia, Marine8 etc) After the Time-skip I suggest only watching past the Fishman island arc, and just looking at youtube clips for certain manga scenes in the anime, because the overall episodes drag on like balls through glass and the animation becomes even shittier than back in the beginning of the anime. So read the manga too, and the anime as additional content.
As for the movies I suggest:
- Dead End Adventure
- Baron Omatsuri and the Secret Island
- The Cursed Holy Sword
- The Giant Mechanical Soldier of Karakuri Castle
- One Piece Film Z
- One Piece Film Gold
- Strong World
- Clockwork Island Adventure Post too long. Click here to view the full text.