Beam Me Up, Scotty!: The now-legendary ONORE, DICKEIDO! was only said in the actual show once, with Narutaki generally saying it in the Net Movies. However, it's now considered Narutaki's catchphrase by the fans.
And in the All Riders VS Dai-Shocker movie, it turns out that that's not the AU Agito at the end, since it's Toshiki Kashuu. (ie: the original Agito).
Soji's little sister, Mayu, is played by the same actress as the true identity of Mr. Voice in GoGo Sentai Boukenger.
Somewhat differently than usual, but seeing Kawara Kazuhisa playing Guy/Apollo Geist is extremely jarring. His most high-profile role was as a police detective in the J-police drama "Aibo", although he was apparently in an episode of Ryuki as well.