Hm...I guess I am tired of seeing:
Linearity ( especially in Sonic games): The problem with Sonic games these days is that while they focus more on speed, that's all they do, they do not take into account of making 3D sonic games more Exploration based. Take for instance Sonic Unleashed, sure it had great day time stages; But they were pretty straight and walled in, making it just "Go straight and boost" rather than platforming. If Sega/Sonic Team took time to perfect an engine making a Non-linear Sonic game possible, it would be great. Sure, it would be slightly harder and longer, but it would make the game more fun and entertaining in the long run.
Too many similar FPS's: Now I have nothing against this genre or it's fans, but it always seems that they all look the same, play the same, and never offer anything new or interesting. It's usually always about a War, And usually always has a similar set of weapons ( smg, shotgun, sniper, etc.).
I know I sound a bit..."ridiculous" about this, but there must be other people who agree with me on this right? I am also saying while I don't hate FPS' I do dislike the constantly same theme of each one.
Casual Games / "Innovation" Using Games (Wii) : I just can't shake off my hatred of when Nintendo thinks "Motion Control is what EVERYONE likes!". I mean, sure, when using it in moderation it's a good thing ( or still a bad thing, your choice) but I just hate how they still think using the Gimmick of Motion Control in outside of the box ways is what everyone will like.
On the other side, is the Casual Games, When we look at it; Casual games probably fill the aisle of Wii games when you just want a good solid adventure game; not a bunch of bland Party games. There are a few cases where a casual game actually turns out better than originally thought of, but that's it, a few cases it does happen, not all the time.
I don't think there is anything left right now, I'll keep thinking of what I am tired of seeing...