Pure Pwnage is way overrated.
It started pretty good, when it was mainly a mockumentary about pro gaming, but once it turned into a crazy fantasy story, it really lost its steam.
MGS after the first one. Hideo Kojima gave himself a story enema once he took off. MGS 1 was awesome though.
Final Fantasy after VI, except my first pull through X (I managed to 100% it, including fixing the sphere grid).
Halo, mainly because when it first came out I was a bit of a shutin, and didn't have an xbox, so all of my friends got really good, and I sucked, so it's never really appealed to me - I prefer single player FPS/TPS experiences anyway.
Elder Scrolls - This one has hooked me a couple times, but all in all, it's mainly garbage. The only good thing about Oblivion in the long view is Patrick Fucking Stewart, and he dies in the tutorial dungeon, fuck that shit.
sports games, although most gamers laugh at them, there is a large segment of the gaming population that still buys these things. Maybe it's because I dislike sports. I'll occasionally pick up a basketball or hockey game and might have a few good laughs, but I could never bring myself to buy them, as they go out of date faster then a home PC, and that is saying something.
Movie games is a no brainer. They suck, and the only people who buy them are fanatics with too much money, and moms hoping to give their kids a happy birthday or merry christmas. They've gotten a bit better over the years, but mainly, they're garbage.