Yes, Innerspace is excellent. Unless you have an aversion for Martin Short doing slapstick. I understand some people don't like him anymore, but back when this was made, he was really funny.
It could be his last really funny part, he just seemed to lose something in the late 80s, best part since Innerspace is probably in Mars Attacks.
And I can't take those pictures of Meg Ryan, she was so gorgeous and natural, now she's scary plastic. She would probably still be a striking older woman if she had allowed nature to take it's course.