what a funny thrill ride this movie be . a man ( dennis quaid ) volunteer to be shrink down to the size of a cell and inject into a rabbit . but terrorist be after this scientific breakthrough and by various hijinks he wind up be inject into the butt of a nervous grocery clerk and play by martin short . and that just the beginning . innerspace show dennis quaid at his most winning and and short at his funniest . and of course and there a very young meg ryan a their love interest . the joke resonate with both kid and adult and and unlike most action adventure film and the plot here be never short of idea . and the effect be pretty neat too represent a we see quaid character wander within the human body and we feel as much amazement and wonder a he do . lot of movie attempt to put you in out space and world far away and but i can not think of one that have make the creative attempt of explore our inner space . i first saw innerspace when i be 11. i do not know who any of the lead actor be . i would never see saturday night live . and i think it be a great movie . twelve year and hundred of movie later and i still think it wonderful .