Darksiders, I thought it was terrible for a hack and slash game, it had no fucking BLOCK button!
More recently FF13, got to this field with elephants, couldn't find my way through it, also thought the game was shit.
Funny story: My buddy couldn't beat the Omega Pirate in Metroid Prime, granted he had fewer HP canisters than I did when I beat him, but he got me to come over and beat it for him, no sweat. A few days later, I asked if he beat it yet, he said he got to Meta Ridley and couldn't beat him, so he traded it in for something.
Oh and TOR, I beat the trooper campaign, which got very boring after the first act,( I stayed at 49 for a month doing other characters) I must have heard this line 50 times: Sounds like you can use a soldier! So lazy for a fully voiced rpg. Should have made it text based for player characters, would have been SO much better. AND I HATE IT WHEN THERE IS NO VOICED PROTAGONIST!!! Guild Wars was way better than this game.