It isn't really one particular point in the game, but Final Fantasy 8 is where the series....not so much jumped the shark...but this was the point that I realized that the series wasn't infallible. Since that game, there were maybe 2 main series games that I really enjoyed. Of course, there have only been 4 main series games (not counting sequels) since then, which is an entirely different issue that I won't get into.

Easily Call of Duty. I actually used to like the franchise during the early days of the 360 and the PS3, but  MW2 pretty much killed the damn franchise for me.

MGS2. Every second after the tanker mission.

I loved ff 8. What was it that make you feel that way? For me it happened after 10.

I agree. Call of Duty 4 is a masterpiece of a game. MW2 tried to make everything flashy and jumped the shark.

Well, if it's what I'm thinking of, it's where they all realize that they all went to the same orphanage together (except for the cowboy douchebag) but they all just forgot because the espers (or whatever they called the summonable monsters I forget) gave them amnesia/one of the dumbest and most unnecessary plot twists in the history of of story telling.

Lol. i thought it would be the crappy drawing system.

Exactly. The multiplayer in MW2 was also plagued with campers and many imbalances. The multiplayer in CoD4 however remains my favorite one! Small number of campers and the most balanced multiplayer the franchise has to offer!

Well there's that too, since the draw system essentially just made magic into a secondary item system.  However, the junction system is just sort of broken to begin with and frankly I felt the problems with the story overshadowed any issues I had with junctioning.

All of these things, plus getting a salary, and enemies that level up with you and the completely unlikeable protagonist.  And at the time, I was pretty disappointed with the sci fi setting, though I've come to terms with that since then.