A silly bit of '80s science fiction, in which a disgraced fighter pilot (Dennis Quaid) is shrunken to microscopic size (by way of... spinning really fast?) and then accidentally injected into Martin Short's ass. Whilst dodging fat cells and fighting the tides of a blood stream, Quaid dutifully explores the inner recesses of Short's body and, eventually, establishes contact with his unwitting host to guide himself towards salvation. Toss in a flaky supporting appearance by Meg Ryan, which almost instantly spawns a love triangle, and you've got the jist.

It's even dumber than it sounds. Many of _Innerspace_'s best moments are when it embraces that truth and leans into the idiocy - the story's mustache-twirling villains are all playfully over-the-top - but it's wishy-washy about that and doesn't always seem like it's completely in on its own jokes. The plot is super redundant, too, with its heroes escaping capture no less than five different times and way too many evil masterminds / sinister henchmen crammed into the scenery. It does boast some decent special effects, and Short's energetic brand of physical humor is good for a few simplistic laughs, but otherwise it's just your basic cable-friendly time filler.