I watched Love & Monsters again the other day, largely because you'd given it such a bad rating, but I always remembered it as being modern Doctor Who at its most interesting. Anyway I still think it's a great episode, especially with the concept of a small self-help group and Marc Warren was great, kind of reminded me of the tv series Dear John with the group of individuals on show. I'm guessing that the ELO influence probably killed it for you anyway
I also watched Fear Her and what a ****ing crap episode that was! and easily belongs that low down on your list.