Hideki Fujiwara (Dan) and Yuta Mochizuki (Geki) both had guest-appearances in different episodes of the previous Sentai series. Fujiwara played a blue alien birdman who was coincidentally named Dan (as explained above), while Mochizuki played Neo Jetman J1 in a two-parter where the main team were replaced.
The child version of Burai in Episode 19 is played by Hisashi Sakai, who went on to play the Sixth Ranger of the next series. Becomes Hilarious in Hindsight when Burai's American counterpart, Tommy, switches from the Dragon Ranger suit to the Kiba Ranger one.
Name's the Same: Isn't it weird how Hideki Fujiwara not only plays both the Blue Ranger for this series and a blue birdman in the previous series, but also how both of his characters are named Dan?
No Export for You: Averted. Normally, Sentai doesn't get a release outside of Asia in it's original form, with the Power Rangers adaptations released instead. But now Saban has agreed to let Shout Factory release Zyuranger on DVD.
Prop Recycling: The Daizyujin cockpit set is in fact the Jet Icarus cockpit set from last season, redressed only a little. Also, the glowing blue atom model orb thing appears again.