Most recently, playing WWE 2K14. Sometimes, the computer decides you're just not going to hit them anymore and then they counter EVERYTHING. And sometimes, the AI earns a finishing move despite getting their ass kicked. It adds to the excitement but when I'm trying to unlock everything, it pisses me off!

Plus there was one triple threat match where I had to finish one particular guy with a certain finishing move. I couldn't choose who I targeted and when I finally hit the right guy (after numerous tries), the computer controlled opponent that I knocked out suddenly woke up, threw me out of the ring and took the win. Assholes.

Patapon.

For a cute little game, it had insane difficulty spikes.

Ninja gaiden nes the game is a pain in the %$#%$%$.

World of Warcraft Progression raiding after 15 hours of wiping,coming close to a kill just to have something coming between you and the loot aka Lag or a random mistake cause someone was already thinking about what he will spend his DKP on.
World of Warcraft and any other MMORPG PvP > Always some retard annoying me.Was a very popular player on my realm and with the old PvP Ranking System in Classic you had to win every damn game.
In SWTOR it was some clown named Nash who had me as his main target every damn game lol

Fifa > At least 2 Online Games in a row before something completely stupid happens which destroys my mood and some Gamepads.

CoD4 > Miles High Club on Veteran.

Soul Calibur 5 > i think it was called Legendary Souls Mode

Veni. Vidi. Vici.

(Doing things the hard way)