i'm guessing its because his time machine is busted

ot since you didn't specify what types of games you like i can only really list my own preferences, so i'd recommend 

uncharted 2

infamous  1 + 2

little big planet 2

starhawk seems awesome as well from the beta but it won't be out for a few months

there are more games but i guess those are the ones i'd recommend first

source?

Last gen trends.

And apparently 250 dollars is cheap!?

interesting theory.

Must buys:

• God of War series: GOW: Collection, GOW: Origins Collection and GOW III. 
• LittleBigPlanet 2 (no point in getting 1).
• Resistance 3.

Other games worth getting:

• Resistance 1 & 2.
• Twisted Metal.
• Killzone 2 & 3.
• Gran Turismo 5.
• Heavy Rain.
• Infamous 1 & 2.
• Uncharted series.
• Ratchet & Clank series.
• Wipeout HD.

Some other exclusives you might like:

• Heavenly Sword.
• Motorstorm series.
• Dead Nation.

Metal Gear Solid 4

Valkyria Chronicles

Heavy Rain

Uncharted 2 & 3

God Of War 3

Little Big Planet 2

the games and the PS VITA will be compatible with PS for along time.

Uncharted 1+2+3
GoW 3+collections
LBP2
MGS4
Valkyria Chronicles
Heavy Rain
inFAMOUS 1+2
Dead Nation (PSN)
FlOwer (PSN)
Journey (PSN) (comes out next mounth) (From the creators of Flower)

All these are a must own for any PS3 owner

Also id highly recommend getting Escape Plan and Super Stardust Delta (both are cheap PSN titles) for the PS Vita

Get God of War 3. I'm currently playing it and its extremely epic.

God of War 3, Uncharted 1-3. have fun.