Which game do you find most frustrating/annyoing/enraging?

I love playing L4d2, but I almost can't stand the community. Ragers, absolute hotheads who talk nothing but racist, sexist absurb SH|T. I just don't get how a game is fun only if you win and if you win then you get to completely demoralize the people who lost. It's like people don't get that without people losing from time to time (or always in some cases ) then there wouldn't be a community to play with at all. I know it's not only L4d2, but the community's been quite disappointing as of late. Oh yeah this happens quite often also between teammates as well, instead of working together they blame each other for the loss, LAME. Here's hoping that peeps mellow out and just try to have fun.

serieus

Fallout 3 and GTA4

I didn't have anything that frustrated me or anything... until i got Ninja ef-ing Gaiden for the Wii via Virtual Console and my god, it brings back memories but holy crap, THE GAME IS FREAKING HARD........ GAAAAAAAAAAAAAAAAAAHHHHHHHHHHHHH and also the old Megaman on the Virtual consoles too.... stupid Willy :/

I also remember many of the games in EA Sports have "cheating" AI. I remember being ahead 3-0 in a FIFA game. Five minutes left in the match and the AI scored two quick goals and my team suddenly being half-courted before hanging on for the win.