Campy, silly, cutesy.  These are totally the best description of what makes Star Trek great.  "Trouble with Tribbles" is the 1967 classic episode from the original Star Trek series where the Enterprise crew find these cute, furry balls that are born pregnant and reproduce like bunnies in an accelerated time warp.  The comical yet endearing episode has remained a fan favorite, even been worked into a time travel episode more than 20 years later in Deep Space Nine.  The Tribbles have evolved into a Star Trek staple, the butt of constant jokes and references across all science fiction.  If only all Star Trek villains were as cute and cuddly: it’d make their action figures a lot better.