Mass Effect (Best series after Zelda)
Dead Space (One of my fave series)
Gears Of War
Bioshock

To be honest apart from those I can't think of any more. I have no PS3 so can't comment on them.

1. Dragon Age
2. Demon/Dark Souls
3. Mass Effect
4. Valkyria Chronicles
5. Bayonetta

Dead rising, no more heroes, uncharted, gears of war and bioshock are my top 5.

mass effect
uncharted
assassins creed
mass effect
oh and mass effect

1. Mass Effect.
2. Bioshock.
3. Gears of War.
4. LittleBigPlanet.
5. Alan Wake.

5. Alan Wake
4.Left4Dead
3.Assassin's Creed
2.Mass Effect
1. Gears of War

Would Alan Wake count? Alan Wake:American Nightmare released this year, but it's not a direct sequel. If not, Portal would be my replacement.

You seriously like White Knight!?!?! 

Mine would be (Not in a specific order);

                              1)Uncharted

                              2)INfamous

                              3)Xenoblade Chronicles

                              4)Bioshock

                              5)Demon's Souls

1. Portal
2. Uncharted
3. Arkham ______
(Those 3 for sure. I suppose if I had to pick others:)
4. Infamous
5. ____ Souls

Uncharted, Infamous, Bioshock, Assassin's Creed, Motorstorm

1. Portal

2. Bioshock

3. Mass Effect

Can't think of any other right now