Oh really? Then let's put it like this:

1) Uncharted

2) Oblivion

3) Ratchet and Clank

Fighting? Maybe SF4?

Racing? I guess nothing compares to Gran Turismo...

There are demos avaliable for Uncharted, Ratchet, Burnout and (I think) MGS4 on the PSN Store.

There isn't one for Oblivion, though, for many reasons.

I did play Oblivion on my pc though and not on ps3.

I don't really like Fallout 3 which is supposed (by some) to be Oblivion with guns.

And don't blame me if you don't like Oblivion :p

Uncharted, Ratchet and Clank and Burnout are all good choices.

You could replace Burnout Paradise with GT5:Prologue if you prefer sim over arcade.

Best Ps3 games this gen:
- Uncharted
- MGS4
- Valkyria Chronicles (Strategy RPG)

other options:
- Burnout paradise
- Devil may cry 4
- Killzone 2 + Resistance 2

This seems farmiliar, did you post this exact thread in the Microsoft discussion except for 360 games?

Well:

- Uncharted fits into 3rd person shooter and adventure which you like
- Gran Turismo 5 Prologue is better and probably has more content than Forza 2 so go with it
- Fallout 3 is legendary, buy it

Third Person Shooter: UNCHARTED or METAL GEAR SOLID 4
Fantasy/Platformer: LITTLEBIGPLANET or RACHET & CLANK FUTURE:TOD
First Person Shooter: KILLZONE 2
Fighting: STREET FIGHTER 4

*i think its in your best interest to try and get 4 games* ;)

LBP
MGS4
Uncharted

Though I'd think about holding off on Uncharted and getting Killzone 2.

Ridge Racer 7
Metal Gear Solid 4
Soul Calibur IV

Uncharted, Heavenly Sword, Metal Gear Solid 4, Motorstorm Pacific Rift, Little Big Planet, Resistance, Resistance 2, Socom, Warhawk and Ratchet and clank are awesome!