These are episodes that I don't find disturbing, but are hard to watch in that they are badly made, or the way they are directed is really frustrating: Earshot (probably just me but this episode seemed like it was high school movie material), Teacher's Pet, Get It Done, Touched, The Dark Age, Him, I robot... you jane, Provider, Go Fish, Expecting, the whole Uber-vamp arc, The Killer In Me, Lies My Parents Told Me... pretty much, a majority of season seven, the space between Sleeper (an underrated ep) and Dirty Girls (one of my all time favourites) is a mixed, generic bag. Not necessarily bad, but I struggle to sit through it all during a rewatch.
And for the disturbing reasons....
I hate rewatching Wrecked. It's painful to watch, especially the Dawn / Willow scenes. I've always had a soft spot for people who are suffering with addiction, etc but seeing Dawn hurt I was so angry at Willow, and she's one of my favourite characters.
I used to find episodes such as Dead Things and Dirty Girls disturbing, I remember rewatching Dirty Girls (okay, I promise I will eventually, stop talking about this episode) and I couldn't get past the car scene. But they are some fantastic metaphors and subtlety in these episodes that are worth rewatching, imo.
Also... Same Time, Same Place. That Gnarl demon made me feel physically sick for a good couple of hours.
And the awkward.... Him (I know I've said it, but um... Dawn cheerleading, anyone?), The Zeppo (not in a bad way though. It's just... certain scenes such as Cordelia's incredibly rude remarks, Xander trying to help.... )