You should give Ratchet and Clank:ToD a try if you like platformers. LBP is fun too though. R&C is more fun in my opinion. It has cool weapons. and it's 30 bucks. One of my favorite games of all time.

I will keep that into consideration. :)

oh i see, well i know my suggestion will be taken with a grain of salt but here it is =]

First person Shooters

Battlefield BC 2 (yep!)

Killzone 2 (my favorite)

Fallout 3 (if you like loooonnnnggg RPG shooters, and VERY depressing ones ... i mean VERYY)

Third Person Shooters

MGS4 (its a must have even if you haven't played the others!)

Uncharted series

Army of Two 40th Day (pretty underrated, but beware this is a great dumb fun so if you like storyline and plot skip this)

RPGs

Demon's Souls (this is the most awesome PS3 game ever!)

Yakuza 3 (same as above , though kinda an RPG)

White Knight Chronicles (if you like Level 5 and JRPGs you will love this)

Dragon Age Origins

Valkyria Chronicles

Elder Scrolls Oblivion

Platformers

LittleBigPlanet (i suggest you get it if you plan on playing it with friends, alone it will get boring)

Ratchet And Clank , you should Skip Tools of destruction (believe me you will get disapointed) , and get Quest for booty and a crack in time (this is one of the best platformers this gen)

other suggestions

Assasins Creed 2 (please please pleaseeeeee don't get AC 1 , its crap !)

Infamous (it will shock you on how immersive it is)

BlazBlue  ( one of the the best fighters ever created!)

Heavy Rain (one of the most unique and immersive games this gen)

there are more, but i think thats enough suggestions xD

i recommend 

rainbow 6 Vegas 

fallout3

lbp

kz2

mw2

bfbc2

uncharted series 

i cant recommend

mgs4 ( if you havent played any of the others then the story isnt going to make much censes)

gow3 ( wait tell its cheeper or borrower it from a friend but i cant say buy it )

nooooo

Tools of Destruction is a good game, but too much chaotic and feels more like a level based shooter than a platformer.

A Crack In Time on the other hand is pure perfection!

That sure is a lot to consider. A couple questions

I heard Demon souls was very difficult, what is your view on this?

I was interested in WKC but I noticed it got pretty bad reviews.. what do you think about the reviews it has gotten?

I am only getting 1 controller with the PS3 so I would be playing LBP alone, It's not worth it if I wont be playing with friends? I was going to get it for the amount of content it has.

@ Severance hmm l really enjoyed ToD. He said he said he liked shooters and platformers so this could be a good mix. Yes, a Crack in Time is better, but ToD is 30 dollars.

It is difficult, only if you don't learn from your mistakes...

Or just make a mage type class and breeze through the game ;)

Good choices mate and welcome to the dark side :D

and try out Heavenly Sword, UC2 and Batman:AA (The ps3 version has the Joker mode exclusively as well ;) )

I'm joining the R&C crowd. The gameplay is fun and fluid, and the humor is priceless. The games are also cheap!