Kamen Rider in other shows
 

so I was watching Megazone 23 part 1 for the second time and guess who shows up for a split second when his bike runs into a car:

https://scontent-a-iad.xx.fbcdn.net/...10399616_n.jpg

Den Liner, along with Momotaros and Hana made an appearance on Hayate the Combat Butler.

https://www.youtube.com/watch?v=VBxeLt0sM28

edit - nevermind more like an Easter egg.

A screen cap from when I watched Midori Days:
http://i.imgur.com/8lkAYBt.png
(Had to dig through the anime thread for this)

you know theirs a entire page on the wiki just for this kinda stuff right?

http://kamenrider.wikia.com/wiki/Lis...opular_culture