I could probably write a huge volume of pieces everyone else likes but for which I don't particularly care. Top of the list: the Rachmaninov Concerto No.3. Second: the 'Moonlight' sonata. Also included would be the Fantaisie-impromptu, 'Mazeppa', 'Le festin d'Esope' (perhaps Alkan's most popular work but among my least favourite of the minor key etudes), and the Mozart concerti K.466 and K.488 (AKA Nos.20 and 23). This isn't to say I despise these pieces (a feeling I reserve for Ravel's 'Bolero'), but I don't enjoy them nearly as much as most listeners appear to enjoy them judging from their popularity. In fact, I'm not even that fond of Beethoven's Symphony No.9, a piece which some listeners seem to speak of as though it were written by God Himself (now that I think of it, didn't Beethoven speak of it that way?).... but I'll take Nos.3, 6, and 7 any day. (It's far easier to find people who would speak ill of any and all of those three than of No.9!) Then among pieces not for piano I also don't think much of Mozart's C minor mass, and actively dislike Holst's 'The Planets' except for parts of 'Jupiter' (I remember seeing them performed when I was younger because I was rather partial to 'Jupiter' at the time.... I was bored rigid by the time they finally shut the door on the chorus at the end of 'Neptune'). I also have yet to hear a Stravinsky piece that really moves me.
Oh, and, as Waldszenen says, almost anything atonal or avant-garde or just plain weird (late Scriabin, Schoenberg except for his very early work, Cage, etc.).... perhaps I just lack the ear for it, but then that's a debate for another thread.
Topic: Pieces everyone ELSE loves