I recently read the question as to what anyone's favorite Lost episode was, but perhaps the hardest would be finding what your least favorite episode would be. For me, it's a tossup, and as I can admit for reasons that aren't too glaring. (After all, the worst of the best is still pretty good.) I'd say either Expose (For killing off the 'newest' characters in such a grim way [Hurley and Sawyer unknowingly burying them alive]) and Ji Yeon (For having two similar plots from completely different times made to look like they were at the same time [Lost, I was confused enough by the Flash forwards, splicing similar flash forwards and flashbacks makes my head hurt.])
So what about you, internet? Your least favorite episode?