Halo 2 and 3 - weapon balance went out the window (yes, the pistol was overpowered in Combat Evolved, but so were a lot of other weapons), I hated how they shoved the garbage SMG's down your throat in 2, and I hated how shields completely replaced your health bar.
World of Warcraft - for pretty much the same reasons that anyone hates combat in MMO's
Grand Theft Auto 4 - I hated the combat, and I hated the cars' handling. (high speed + turn = no control of the car whatsoever)
Hulk: Ultimate Destruction - While I do enjoy the game, there's a lot of flaws. The most effective way to win fights is to find the biggest throwable object nearby and pick it up and toss it at the enemy over and over again. Also, you have to charge pretty much everything. To destroy a helicopter, you have to charge your jump, then charge up your homing Superman punch (or charge your object throw if you're carrying one). Strike teams, which come after you when your threat rating (which is pretty much the equivalent of GTA's wanted system) is maxed, are easily destroyed, and when they are, your threat rating goes back down to zero.
I pretty much spent the whole time going through the story mode, which I actually liked, because of the antagonist's descent into madness, and his motives. There's something I never thought would happen. Me liking the story of a game whose selling point is "HULK SMASH!"
