Decade (Oh boy here we go)
-Let's get it out of the way now. Narutaki...just..just Narutaki
-"This is all Decade's fault"
-"ONORE DECADEO!"
-"Decade...you have destroyed this world as well."
-The Decadriver itself is a good one as well as the cards. Lots of us sure like using the "(blank)" RIDE....(insert name. Repeat letter for Final Attacks)
-Mega Man Decade. Pokemon Trainer Diend (or decade is Sora or that Diend is a refrigerator, etc.)
-"I'm just a passing-through Kamen Rider. Remember that."
-"Decade had no story"

(I'm hearing that more and more since Iga's review came out)
-Complete Form looking ugly as sin to most fans.
-This series being Gackt's love series (like how TMR was to Gundam SEED)
-The Natsumi thumb thing
-"Will Kuuga henshin this week or not?"
Anything else I'm missing?