The Sound of Music
The sight of two metal forks with their tines stuck together (Yep, that's odd. Who knows why, but I can't stand it. Plastic forks are no problem, but metal? makes me whimper.)
The department store women who lunge forward to spray perfume at potentially unsuspecting shoppers as we try to walk by.
That poster of a kitten clinging to a branch, with the caption "Hang In There!" Ditto the one of a puppy in a basket next to a bunch of flowers, captioned "A Hug Would Make My Day."
Those freakishly smiling kids on Barney (I have seen this show a total of: once. It is nightmare fodder.)
The phrase "keep your eyes peeled."
Laura Ingraham's voice (don't know her? Cut some aluminum siding with a band saw in an enclosed space. Same effect, without the tiresome politics.)
Motivational/inspirational posters displayed without irony. I'm always caught off guard when I see this actually happens. Fortunately there is an antidote for this one.