If you loved Looking Back at it All: The Dragon Ball Z Year-End Show!, try City Hunter Special: The Secret Service
A bridge between a film you've already seen and one most people haven't. Here's what they share, and what the second one does that the first one doesn't.
You already loved

Looking Back at it All: The Dragon Ball Z Year-End Show!
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City Hunter Special: The Secret Service
What they share
Theyboth carry the playful mood tag, and they sit in Action / Animation / Comedy territory. If that's the register that drew you to Looking Back at it All: The Dragon Ball Z Year-End Show!, the second film will land in a comparable space — through a different lens.
playful
What City Hunter Special: The Secret Service is
A feature-length anime spin-off doing what spin-offs do. Ryo Saeba aka City Hunter takes a bodyguard job protecting the protector of a Third World nation. It goes about as expected, with family secrets, bullets, and cartoonish violence.