20. Godzilla has a brain about this size.
(Harry Holcombe from KK vs. G.)
19. Please, return the egg!
(The Peanuts from G. vs. The Thing)
18. King Kong is under my sponsorship!
(Ichirô Arishima from KK vs. G)
17. You’d steal Niagara Falls for a drink of water.
(Rhodes Reason from KK Escapes)
16. Go on… Megalon!!
(Robert Dunham from G. vs. Megalon)
15. Even in Latitude Zero, we never discuss the age of a woman.
(Joseph Cotton in Latitude Zero)
14. Let’s get all of the hip kids we know and stage a great big party on Fuji.
(Toshio Shiba from G. vs. The Smog Monster)
13. Every time you keep checking on a woman’s past, you’ll never fall in love.
(Nick Adams from Monster Zero)
12. I'm not as afraid of Godzilla as I am of the editor... he's meaner.
(Yu Fujiki from G. vs. The Thing)
11. They were probably on a bad LSD trip.
(Russ Tamblyn from War of the Gargantuas)
10. Well, if he saw a monster, he’s had too much saki!
(Raymond Burr from Godzilla, King of the Monsters)
9. My corns always hurt when they're near a monster!
(Yu Fujiki from KK. vs. G.)
8. Superman beats them all!
(Hiroyuki Kawase from G. vs. The Smog Monster)
7. He probably fell in love with a whale.
(Russ Tamblyn from War of the Gargantuas)
6. Banana Oil!
(Hiroshi Koizumi from Gigantis)
5. Oh, Godzilla what terrible language.
(The Peanuts from Ghidrah, The Three-Headed Monster)
4. You stinking rats!!
(Nick Adams from Monster Zero)
3. It’s a powerful pipe!
(Masaaki Daimon from G. vs. MechaG)
2. Aww, these monsters are as stupid as human beings!
(Yosuke Natsuki from Ghidrah, The Three-Headed Monster)
And, I guess my favorite would be:
1. I say you have nothing to fear from us…but we are going to control you now!

(Kyôko Ai, the Kilaak Queen from DAM – AIP version of course)
Like I said before, there are probably more I haven't thought of.