These are on my list:
Red Dead Redemption
Call Of Duty MW
GTA franchise
KillZone franchise
GOW franchise
Assasin's Creed
BF Bad Company
Dragon Age: Origins
Little Big Planet
Uncharted
Heavy Rain
Valikia Chronicles
Resistance
I see you aren't the gamer that likes too much violence or really cute things (looks at Little Big Planet), which there's no problem with that, but is there a reason why you hate them?
But anywho, here are some games that I cannot stand, whether it was actually a terrible game, it's over the top popularity or other.
The Call of Duty franchise - Whether it is Call of Duty 3, Modern Warfare 2 or the latest one coming out, I'm starting to become pretty darn annoyed by this franchise. Sure, how the series started off was something to be surprised and hooked about, but I'm starting to roll my eyes too much that there's too much COD games and people would actually get addicted to those games for 24/7. Seriously? Do those people have lives or something?
Super Smash Bros. Brawl - There's good things about this game, but when it became WAY too popular is where I lost my love for the Super Smash Bros series. I loved the one for the N64 when the series first started out, but when I tried Brawl on the Wii with my friend, I did not really enjoyed it that much. I guess it's because using the Wii remote did not work that well for me.
Assassin's Creed series - Same reason as Super Smash Bros. Brawl. There was too much talk about it that I was pretty annoyed. It might be a really fun game and all, but there was too much talk about it after the release of Assassin's Creed 2.
the Manhunt series - Do I really need to explain why? Everyone knows that this game is too morbid and disturbing. Period.
The Atari Porn games - It's just horrible, pathetic, gross and pretty offensive, especially Custer's Revenge. Period.
Donkey Kong 64 - The game is actually decent, but it's difficulty is what bugs me the most. For an E-rated game, it game feels impossible to beat, even for an adult. I remember cursing like a sailor when I failed on some of the missions so many times. Although I do like Rare, but I would say that this is my least favourite game from them.
The Halo series - Same reason as Call of Duty. It's too popular and the story doesn't sound that great to be honest.
The Sonic 3D games - A videogame character that I liked and adored during the 90's turned into a lame-mo when he and his lame-mo friends went into 3D visuals with really sappy storytelling, their dialogue is even worse than many games made in Japan. Hopefully Sonic the Hedgehog 4 would make Sonic fans happier.
I believe that is it for now.
I also hate ManHunt. And Saw. And Dante's Inferno.
Every single game I have mentioned are pathetic and gory. And pointless.
I also hate ManHunt. And Saw. And Dante's Inferno.
Every single game I have mentioned are pathetic and gory. And pointless.
Well anything with so much blood and violence is pretty darn childish, but I guess many people are easily entertained by those games. 
But Little Big Planet isn't gory or violent. Is there a reason why you hate that game? 
Even Uncharted RF? That game isn't the least gory. Same goes with Heavy Rain, but that's either a love or hate type of game, so It's understandable. LBP isn't even gory AT ALL.
And Awww Tipsy, I love Assassin's Creed, I just got into it. Though I do understand where you are getting at, the game is a bit overhyped and I do think people claim it's much better that it really is. But I enjoy neither the less, and I would recommend it to you if you're into those kind of games.
As for games I dislike (I don't ever use the word hate…well maybe for Call of Duty, but anyways):
CoD series: Or at least Modern Warfare. Same reason as Tipsy, but I'm also not the biggest fan of FPS to begin with. But if I am, the game has to have a good story to it to get me interested and of course being fun. I don't find CoD any of those.
Halo series: Ok, I don't think these games are that bad, or at least the first. I played it, and it was ok, but still not my cup of tea. However, I do think it's extremely overrated! It's no where as good as other games I've played that are FPS, and let alone isn't that great of a game to begin with. Also, I would have just ended it at Halo3, but now we got a shitload of spin offs. I don't hate Halo, but I don't at all thing it's that great of a game.
Manhunt: Speaks for itself
SSB Bawrl: Don't hate this game, but it's wwaaaaay overrated. I prefer Melee over it anyday.
Those are the big ones though.
Though, just to reply to the Sonic 3D games: Not all of them are bad, at least the DreamCast ones, but they went down hill from there. Don't think Unleashed was too bad though, but I could due without the Werehog levels.
Still, I think 2D is where it's at for Sonic. If you haven't already and own a DS, go pick up the Sonic Rush series, they are fun 2D sonic games and I enjoy them very much.
And Awww Tipsy, I love Assassin's Creed, I just got into it. Though I do understand where you are getting at, the game is a bit overhyped and I do think people claim it's much better that it really is. But I enjoy neither the less, and I would recommend it to you if you're into those kind of games.
I could probably give Assassin's Creed 2 a try since my 12 year old cousin is into that game and he has it. I'm pretty open to a variety of games, but since I'll be working this Monday for two months and will be doing other things over the summer, I probably would not have the time to play or purchase more games.
Though, just to reply to the Sonic 3D games: Not all of them are bad, at least the DreamCast ones, but they went down hill from there. Don't think Unleashed was too bad though, but I could due without the Werehog levels.
Still, I think 2D is where it's at for Sonic. If you haven't already and own a DS, go pick up the Sonic Rush series, they are fun 2D sonic games and I enjoy them very much.
Unfortunately I don't have a DS, but probably I could recommend that game to my cousins. 
I know that not all 3D Sonic games are terrible, but most of them aren't even the best at this point. They are either bad, mediocre or decent the most. I think it was Sonic: The Next Gen. game that made me cringe and despise the Sonic 3D games even more.
I have yet to play AC2 being I just started playing the first which my brother borrowed from a friend. But I love it so far.
As for the case of Sonic: Sonic Next Gen surely did that to a lot of people. The game did so for me. I did play a bit of Unleashed though, and that was pretty fun (I didn't think the Werehog levels were too bad neither). On the right track at least, but the metals is what killed the game for me.
Still, I am kind of looking forward for Sonic Colors (I think that was the name) when it comes out.
Hmm there are some games that got on my nerves… (By 'got' I mean, that I used to hate them a lot but nowadays I don't care much for them)
All the Crash games 2005 and onwards, maybe except for the latest one on iPod.
And there is more (Some of which you guys mentioned, like the majority of the 3D Sonic games)
Here my list:
Jak and Daxtar series
Resident Evil 1-3
Manhunt
Devil May Cry 2
Call of Duty MW2
Doom series
Dante's Inferno
All the WWE games - same stuff, different year
Any game made by EA Sports such as Fifa - see above, also I hate sport games
Manhunt - …well coz it's manhunt
Saw the game
Games made from movies - always terrible (but I kinda liked James Cameron's: Avatar the game
Games by Unreal - Gears of war, unreal tournament, I just cant stand them
"Olympic games" games - such as "mario and sonic at.."
most…no…all JRPG's - …..coz
Borderlands - looked good and looked kinda like fallout 3 but was terrible
Dawn of war 2 - they ruined it, dawn of war - dark crusade was the best one
Too Human - oh gawd, that sucked
Turning point: fall of liberty - sucked
thats all I can think of off the top of my head
These are on my list:
Red Dead Redemption
Call Of Duty MW
GTA franchise
KillZone franchise
GOW franchise
Assasin's Creed
BF Bad Company
Dragon Age: Origins
Little Big Planet
Uncharted
Heavy Rain
Valikia Chronicles
Resistance
Could I ask how old you are? As these games are grown up games and young kiddies won't appreciate them to their full extent… 
These are on my list:
Red Dead Redemption
Call Of Duty MW
GTA franchise
KillZone franchise
GOW franchise
Assasin's Creed
BF Bad Company
Dragon Age: Origins
Little Big Planet
Uncharted
Heavy Rain
Valikia Chronicles
ResistanceCould I ask how old you are? As these games are grown up games and young kiddies won't appreciate them to their full extent…
Wait! Do you consider Little Big Planet to be a grown up game? Well, it can be if you are designing your own level professionally. 
These are on my list:
Red Dead Redemption
Call Of Duty MW
GTA franchise
KillZone franchise
GOW franchise
Assasin's Creed
BF Bad Company
Dragon Age: Origins
Little Big Planet
Uncharted
Heavy Rain
Valikia Chronicles
ResistanceCould I ask how old you are? As these games are grown up games and young kiddies won't appreciate them to their full extent…
Wait! Do you consider Little Big Planet to be a grown up game? Well, it can be if you are designing your own level professionally.
All other games are though, and judging by his posts I don't think he's over 15 so he won't appreciate those type of games! 
I also have a list:
Fifa,NBA,NHL,NFL-These games are the same every year.Nothing really changes.Plus I'm not into sports games like these.
Mortal Kombat-This was a little fun,but got a little too repetitive after a while.I also can't stand the blood and gore.
Call of Duty-Like Mortal Kombat,this game gets repetitive after a few plays.And this game is overrated,and overrated games tend to be boring and/or repetitive.
Skate-This game looked fun at first,but like the aforementioned games,gets a little repetitive.Also,the camera is weird.
And that's about all I can think of.Pretty small list.And as you can see ,I dislike games that get repetitive after a few plays. :oui:
OK im probably gonna get lynched for this one but… I couldn't stand Ratchet and clank: size matters! It sucked! It was way too glitchy, the hoverboarding thing was a nightmare, and it just didn't live up to the ratchet and clank standard.