Meridian - Brigadax? Trillgadoon? Yawn, either way. It's bad when the highlight of the episode is Jeffery Combs seducing sexy Quark.
Life Support - Sort of like Frankenstein, without the social commentary, the horror, the cool monster, the mad scientist, the peasants, or everything else remotely positive. Worse yet, unlike the other two I chose, it wasn't saved by its (bizarrely inappropriate comedic) subplot.
Heart of Stone - Kira on the rocks! Fortunately, Nog's subplot was much, much, much, much, much, much, much, much, much, much, much, much, much, much, much, much, much, much, much, much, much, much, much, much, much, much, much, much, much, much, much, much, much, much, much, much, much, much, much, much, much, much, much, much, much, much, much, much, much, much, much, better.