Five Of A Kind

1. The blue spraypaint that T.J. used painted the Ranger figures instantaneously, leaving an aerosol residue all around them.
2. When all five Rangers looked like Blue Ranger to confuse the Psycho Rangers, the four disguised Rangers' voices apparently sounded like their own rather than T.J.'s, leaving the viewer to wonder why the Psychos didn't identify the real Blue Ranger by his voice; furthermore, only the real Blue Ranger used the Astro Axe, but the Psychos still didn't catch on.
3. Considering that Zhane had known of T.J.'s plan, that the plan had been working, that Zhane hadn't told the Rangers of his own plan, and that Zhane's plan wouldn't succeed, whatever it was he was hoping to accomplish, it's quite unknown what on Earth Zhane could have been thinking.
4. The Rangers mispronounced "thermometer" as "thermo-meter" while in the Megazord.