I'm preeeetty sure Feliz Navidad was only a hit in America, because I'd never even heard of it until this version [https://soundcloud.com/rainbowdragoneyes/feliz-navidad] came out last year.
But yes: I work in retail. We've had our Christmas playlist for a month now and I'm completely sick of everything on it. Especially the four versions of Jingle Bell Rock and the three atrocious versions of Santa Baby. And especially especially that bloody Mariah Carey one, because there's ALWAYS someone who feels the need to screech along to it. Every time. Please, just stop.
In fact, here's the only Christmas song (apart from the one above) that I don't currently hate.