All of the Dragon Ball Z arcs are noted for various contributions to the series such as villains, transformations, and new heroes.
If you're looking to watch any classic shonen anime, you'll want to see this one by any means necessary.
Dragon Ball Full Color Freeza Arc, Vol. 1 (1): 9781421585710: Toriyama, Akira: Books
Dragon Ball Z Saiyan Arc / Recap - TV Tropes
Unveiling the artistic resonance: Here's how 'One Piece' echoes 'Dragon Ball Z' best arc
List of Dragon Ball Arcs
Dragon Ball Super: Every Story Arc, Ranked
All Dragon Ball Z Arcs in Order
what is the exact order to watch dragon ball ?( the must watch not the optional ) : r/Dragonballsuper
All Dragon Ball Z Sagas, Ranked from Worst to Best
All Dragon Ball Z Arcs in Order