Quotes from the MST3K version
Joel: Get me a phone to Moscow and a chocolate donut for Kenny!
Crow: CAMERA!
Tom: Titles by the Atlantic Ocean.
Joel: MCMX...DAIEI motion pictures!
Crow: Hidemasa Nagata...that's Japanese for Innagaddadavida!
Tom: I am getting cinema-sick here!
-Gamera uses his breath to roast a bunch of people and the filmstock turns
"negative"
Tom Servo: Oh, don't get so negative!
Crow: Micro Machines at 12:00 and G.I. Joe is there!
Tom: Live the good life in the off-world colonies!(a reference to 'Blade Runner'?)
Joel: Meanwhile at Jackie Chan Technical College...
Tom Servo: He be funky...he's shakin' his groove thang!
Crow: Now, watch me bust a move!
Tom: The Kennedy Memorial...or a Greek theatre, maybe?
Tom: Do you take this man to be you lawfully wedded wife?
Tom: They launched Merv Griffin's microphone into space!
He's got my keys!
Kenny's Father: When I was Kenny's age, I use to draw girls.
Joel: Oh, daddy, you're so randy!
(Joel and the Bots get a glimpse of Dr. Hidaka's fetching assistant)
Joel: Mercy! Rrrooow!
-The freezer bombs can freeze anything!
Crow: Even a man's passion?
Narrator: We could not destroy Gamera on Earth, but the Z-Plan, the last hope of mankind...
Tom: ...destroyed him in space!
Kenny: Gamera...see you soon!
(I think he says "Gamera, sayonnara" in the Japanese version)
Crow(impersonating Gamera): HEY, KENNY! GET BENT!