To name a few from various medias:
-Movies: Pretty much everything Marvel Studios has produced. I know everyone treats the MCU as the second coming or something, but sorry, to me, they're popcorn movies. There have been far better super hero movies produced, and they succeeded by being good movies, not by being advertisments for their own universe.
-Books: The Tomorrow series. This was really big back in the day, and no, I didn't like it. When I was urged to read the first book again a few years ago, I still didn't like it. Maybe the series gets better, but I'm sorry, I find the characters dull, the book is confused as to what its "message" is, and living in Australia, I've never felt threatened by the "Asian hordes" the book wants me to fear and hate, but also feel sorry for because...like I said, confused messages.
-Games: My feelings towards 'Half-Life 2' are more "meh" than anything else - I think it's a solid shooter, but I don't consider it that good a one. The puzzles are tedious, the characters are generally annoying (bar Breen), and while Gordon being a silent protagonist works some of the time (e.g. the Breencasts wouldn't have been as effective had he vocally responded to them), other times ("Gordon would never work with you!")...ugh. I wouldn't say I dislike HL2 in the same way I dislike the above examples, but it was one of the first games to spring to mind per the parameters of the topic.
-Anime: Dragon Ball Z. No, I do not like this very much. I don't like the padding. I don't like how death is pretty much a non-issue. I don't like how the message of the series is "if you're a saiyan, you'll do great, if not, tough luck"). I don't like how the nature of victory is based purely on power level. I don't like how the idea of a Super Saiyan was tossed aside for the "cool" factor. I...ugh. I liked DBZ once as a kid, and right now, there's some things I still like. But when I think of those things, I think of Goku begging Krillin to show Vegeta mercy, or Vegeta begging Goku to defeat Freiza, knowing that he's about to die (resurrection notwithstanding). I do not think of long pointless monolgoues about power levels and ki blasts.
-Machinima: Red vs. Blue post-season 6, and especially 'Freelancer'. Let me make something clear. I LIKED 'Red vs. Blue'. I liked its humour, its characters, its use of the medium, etc. What I don't like is the nonsense we got post-season 6 (and especially in season 9 and 10), which is basically fight after fight, vapid, annoying characters, a lack of any humour or charm, and...gah. Let me make this clear. I like Red vs. Blue. I do not like 'Freelancer', which is RvB in name only.
-Cartoons: The Legend of Korra. Jumped the shark at the end of season 1, was torn to pieces by the shark throughout season 2, so by the end of season 2 the shark had farted out its entrails. I've heard multiple people say it got better with season 3, but people have also said that RvB got good again with season 11. Forgive me for not having much faith in these assertions after everything I had to endure in both cases before giving up.
-Comics: The entire superhero genre. Yeah, I'm expecting flames for this, but while there've been a few superhero movies and cartoons I've enjoyed, I've never got into any comic superhero series. I've heard people say that superheros are the next version of the Greek gods (literally), but as far as the comic book medium is concerned, favorites that spring to mind are the likes of 'Maus', 'Calvin and Hobbes', 'Asterix', 'Tintin', etc.