I got a couple for some games.
Bioshock:"Would you kindly?",The first Big Daddy, the statue girls coming to life,the little sisters saving you in the end, puppy's neck getting snapped. *shivers*
Halo 3: Learning Chief's real name, seeing Chief freezing himself again, getting killed by a plasma grenade thrown by an opponent 100 ft. away.
Star Wars:Kotor:Finding out you are Darth Revan
Dead Space:That final freaking boss. Holy $@#(!!!
Fallout 3:Getting back into the Vault
RE 5:Jill under the mask!?!? WTF!?!?!
Fable 2:Shot out the window. Saw it coming, but still somehow shocked.,giving mother the letter in Childhood and having the guy marry her instead of...Belinda?
Fable:Killing sister at the end and getting the Sword of Aeons. Killing Whisper at the arena.
Let's see here....
Jade Empire:Master betrays you. Never getting that Intuition option down.
Half life

og throwing you in that car. Ellie dying. When the Spire explodes and the aliens save you and Alex.
Thats it.