Germans Love David Hasselhoff: Despite having a So Okay, It's Average reputation in almost every other country, this series is crazily popular in Vietnam, even as of the time of this writing (February 2019) is still widely remembered, referenced and most likely the first one Vietnamese people think of when talking about a Sentai series. This is because Gaoranger was the first Sentai series to be imported in Vietnam in around 2003 - 2004, and being one of the few things available on DVDs and VCDs for the kids to watch at that time, it spreaded very widely around the country.
Ho Yay: Gao Red and Gao Yellow, and Gao Blue and Gao Black are goldmines for this.
Idiot Ball: Episode 25 has the five main rangers realize a Org has caused people to have their voices ruined, leaving them only being able to meow. They realize it's related to a particular karaoke booth, and then they quickly forget about searching for the monster, and decide to sing instead. The hidden karaoke machine org causes them to end up meowing, too. Leaving them unable to morph because they can't say "Gao access". They only survive because Silver wasn't there, he could still morph and has to beat the monster by himself.
The Un-Twist: The Org Master is a figurehead for the Highness Duke Orgs. Considering most of Yabaiba and Tsuetsue's scenes involve them kissing up to the Highness Dukes and how little the Org Master is mentioned, this revelation is pretty obvious.