FFX - I've played it through 3 times and I still find the whole game to be one of the most boring entries in the series. There are elements I like (battle system sounds great in theory, it is terrible in practice...) and some of the story and symbolism could have come off really good if the cast wasn't so flat and Square went out of their way to push the melodrama up to eleven in every cutscene.

Mirror's Edge - You know, when I'm actually just parkoring through the stages it's fun, combat is a chore and feels really out of place in the game's scenario and the story is not terribly good either. I'd probably just prefer a time attack mode with the engine and good set designs over a plot and combat.

Resident Evil (whole series) - Zombies are not scary and the games have awful controls.

Valkyria Chronicles - A lot of great ideas bogged down by a unnecessarily slow gameplay, tedious menu system, and a generic war story that tries to fit in every single anime anti-war series cliche it can find.

Steambot Chronicles - An odd anime steampunk GTA clone that has quite possibly the worst mecha controls I've ever seen for a game. The music games are fun though...

God of War - It's just a violent DMC clone that is more sluggish, filled to the brim with annoying QTEs, and has one of the most unlikable protagonists in an action game. If it wasn't for some of the game's clever puzzles, I'd say it was all visual flash and gore with little substance.

Super Mario Galaxy - I blame part of this on this game being the first 3D Mario game I've really spent some time on, but I don't know... I find the stages are pretty small and unnecessarily simple, not to mention that I bowed out of the series before collecting arbitrary McGuffins to get a perfect game became a core game mechanic. So that just seems like busy work rather than something I would care to actually do.