I guess Sub Rosa beats them all
Move Along Home is excusable... it was season 1 of a brand new show... shit happens.
I do remember bits of it (ninety-freaking-three! heawlee sheez Ae'm ewld!) and I felt it weird too, but mainly because I watched it dubbed, and the voice acting of the time was rather laughable... bad translation, bland emotions, shitty sfx...
but airing Sub Rosa on season SIX of a show that had been to hell and back already?
Threshold deals with Trek facts, so it's not entirely "off" the series... it's still "on" theme, but "badly played out"
and A Night in Sickbay is similar to TNG: Justice.... people walking onto an alien world, being exposed to their traditions (environment) and suffering for some minor matter which only takes a big change on the behavior of one of the characters when it should be solved more easily by just realizing the danger and putting aside their differences.
again... well thought and scripted, badly played