I'm torn between Alpha Protocol and Mass Effect.
On one hand, you have an enemy AI so stupid, they will shoot randomly into walls trying to hit you or they will walk the same path for the fifth time and fail to notice me standing right next to the doorway they just walked past.
On the other, you got friendly AI whos major job it seems is to suck and die as they absorb bullets and refuse to take cover unless you order them to somewhere inparticular.