Anti-Climax Boss: At the end, Kaiser Buldont and Multiwa don't fare too much better than the usual monster-of-the-day.
Big-Lipped Alligator Moment: Juri and Momo hold a dance aerobics class...for Ohranger-Robo (piloted by OhGreen and OhBlue) and Red Boxer (piloted by OhRed). They claim it's to make sure Ohranger-Robo's been fully repaired after having been heavily damaged several episodes prior, but it's still really weird.
Crazy Awesome: Gunmazin. His idea of saving a dog from a collapsing building is to restore the building.
Crowning Music of Awesome: Action! Ohranger and Niji Iro Crystal Sky. The latter was so much so that it was used as an instrumental in this series's tribute episode of Gokaiger instead of an instrumental of the opening.
Game-Breaker: King Pyramidder Battle Formation and it's Super Legend Beam, quite possibly the most overpowered mecha combination in the whole forty year franchise! Even the Final Boss didn't stand a chance.
Hilarious in Hindsight: The Oh in Ohranger comes from UAOH, although 'oh' in Japanese can mean 'king'. Then they get a Sixth Ranger that actually has the kanji for 'oh' on his helmet, and what do they call him? Kingranger. Some of you may remember the fansub debacle from Tokumei Sentai Go-Busters, where translating GoBuster-Oh as Go-Buster King forced them to translate the actual GoBuster King as Go-Buster Oh.
Mis-blamed: No, Ohranger didn't nearly kill off Super Sentai. While it's true that ratings were very low, the toy sales were phenominal - it has some of the highest toy sales in the franchise, only rivaled by Gaoranger and Kyoryugernote Kyoryuger does beat Ohranger if one includes toy sales the former made in Korea, 8.5 billion Yen. It's also worth noting that the show's ratings, while low, were actually better than that of it's successor for the majority of the latter's run. Fortunately, this reputation seems to be dying down as of late.
King Pyramidder can combine with Ohranger Robo and Red Puncher, or just with Oh Blocker...but it will still have Red Puncher's gatlings on its' shoulders.
After Bacchshund is destroyed, the next monster reuses part of his death explosion...which is pretty noticeable since the set suddenly changes from mountains to a destroyed city.
Vindicated by History: While the show's been known as "The one that almost killed Super Sentai", it's gotten more favorable response over the years.
What an Idiot: Juri falls for some obviously evil traps simply because it involved cute and or fun things.
When sympathetic monster Bara Revenger is controlled by Baranoia and made to attack the Ohrangers, they have no choice but to destroy him. Nobody even brings up the possibility of instead trying to shoot the huge control box sticking out of him.