There were a few LOO moments during the Clockstoppers parody, but as a whole the entire episode was atrociously bad.
Also, this didn't even feel like a Halloween episode. The third segment was a parody of a movie intended for 6th graders and had no scary or frightening or ghoulish aspects to it. This is how clear it is that the Simpsons has run out of ideas: they do a Halloween episode and can't even think of three Halloween episode plots.
Fucking horrible Simpsons. I wish I could unwatch last night's episode.